Investigating significant historic and contemporary sites from the revealing vantage points of drone, satellite and aerial photography.

A bizarre multi-colored smoking mound seems to belong to another planet; a tranquil, frozen lake emits an unnatural moaning noise; deckhands are stunned to see the ocean around their container ship smoking uncontrollably.

Two women designers construct one of the longest-serving liners in history; the dramatic shipwreck in the Canary Islands.

With the East Coast adventure slowly coming to an end Peter and Elroy contemplate what they have found and learnt throughout the journey; a new plan starts to form.

Experts investigate deserted island structures, including a mysterious hideout in Croatia and the remains of Ireland's Alcatraz.

A man films a weird box-shaped craft flying not far from the top-secret Whiteman Airforce Base in Missouri; a woman in Siberia films the sky erupting on the horizon.

On a picturesque island off the coast of Brazil, this penal colony was once the site of a dramatic prisoner uprising; among the ruins lies the story of the violent rebellion and the recapturing of the island by military forces.

The Avenue of the Sphinxes has now been unearthed in the biggest excavation in Egyptian history; using cutting-edge CGI, investigators reveal the hidden secrets of the sphinxes.

Palmyra: pearl of the Syrian desert; experts return to the site and use CGI reconstruction to reveal the secrets of Palmyra's ancient engineers.

The Dendera Temple is one of the best-preserved temples in all of Egypt; experts decipher its mystifying zodiac images and uncover the ceremonial events that took place at this sacred site, and stunning CGI rebuilds this grand complex in its prime.

The magnificent tomb of Alexander the Great mysteriously vanishes and becomes a legend; using CGI, investigators piece together the evidence to reveal where his tomb lies and what it might look like.

In 373 B.C., the Greek city of Helike vanished; archaeologists believe they've found the ruins of the great lost metropolis; using CGI, experts re-create the city's final moments and reveal its links to the greatest lost land of all - Atlantis.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

A ghost ship appears overnight on the shores of Ireland; it may help shed light on the fate of vessels claimed by the most notorious patch of ocean on earth.

Inspect the wreck of the Mary Celestia, a Civil War ship raised by a hurricane. Encounter imperial relics exposed by a drought in Iraq, the storm-tossed remains of a medieval man, and long-lost wooden artifacts that reshape Native American history.

On Aug. 10, 2020, hurricane-force winds blast through Iowa battering the city of Cedar Rapids; this rare Derecho packing powerful straight line winds takes the city by surprise and leaves behind a trail of destruction.

Following the debate about Egypt's visionary warrior king, who ruled the country for more than 60 years; learning why scholars can't pin down the origin of his wife, Nefertiti and dig into the strange circumstances surrounding his death at age 90.

Counting down to the annual deer release, which could get shut down if a government inspection doesn't go according to plan; the staff scramble to help a hawk with a broken beak and vaccinate the raccoon unit against a potentially deadly virus.

On Aug. 10, 2020, hurricane-force winds blast through Iowa battering the city of Cedar Rapids; this rare Derecho packing powerful straight line winds takes the city by surprise and leaves behind a trail of destruction.

A lavish theater that once accommodated decades of fashionable entertainment is now mysteriously deserted in Cleveland; experts investigate and reveal a destructive performance that would lead to its eventual demise.

On Aug. 10, 2020, hurricane-force winds blast through Iowa battering the city of Cedar Rapids; this rare Derecho packing powerful straight line winds takes the city by surprise and leaves behind a trail of destruction.

Determining if Nostradamus predicted Hitler and 9/11; learning why a diving company makes a device to save the life of a tiny bird; examining how a metal sphere smaller than a pinhead can kill a man.

Two women designers construct one of the longest-serving liners in history; the dramatic shipwreck in the Canary Islands.

Travel to Cairo to examine a stunning find under the Pyramid of Unas' watchful eye. Search for a 16th-century Portuguese shipwreck in the Namib Desert, unearth a WW II plane that crashed in the Sahara, and study a fossilized missing link in Taiwan.

On a picturesque island off the coast of Brazil, this penal colony was once the site of a dramatic prisoner uprising; among the ruins lies the story of the violent rebellion and the recapturing of the island by military forces.

A Montana small town branded by an infamous jailbreak; how nature trumped greed during an Alaska treasure hunt; a cultural icon from the rough side of New Orleans; the Empire State of the South.

The West Coast is home to the San Andreas fault, stretching for almost a thousand miles beneath the feet of millions of Americans.

Balancing on a knife's edge as a crucial bridge is left hanging over a canyon on California's Pacific Coast Highway; a high-speed train disaster in Germany; a Vegas casino inferno; a sinking feeling in an Australian apartment building.

Inspect the wreck of the Mary Celestia, a Civil War ship raised by a hurricane. Encounter imperial relics exposed by a drought in Iraq, the storm-tossed remains of a medieval man, and long-lost wooden artifacts that reshape Native American history.

With the East Coast adventure slowly coming to an end Peter and Elroy contemplate what they have found and learnt throughout the journey; a new plan starts to form.

Experts examine how the Chernobyl nuclear disaster and the Bhopal gas tragedy happened; they also explore the consequences and how they could have been avoided.

Exploring the stories behind mankind's greatest engineering disasters through archives and expert interviews.

Exploring the stories behind mankind's greatest engineering disasters through archives and expert interviews.

Exploring the stories behind mankind's greatest engineering disasters through archives and expert interviews.

Experts study what caused Kegworth air disaster in 1989 and the tragic Concorde crash in 2000; examine what were the consequences and how they could have been avoided.

In Tennessee, a violent tornado touches down in downtown Nashville - interrupting a live news broadcast and raking through the city; at the Hamma Hamma Falls, a kayaker races to rescue his friend from a terrifying ordeal.

Following the debate about Egypt's visionary warrior king, who ruled the country for more than 60 years; learning why scholars can't pin down the origin of his wife, Nefertiti and dig into the strange circumstances surrounding his death at age 90.

Counting down to the annual deer release, which could get shut down if a government inspection doesn't go according to plan; the staff scramble to help a hawk with a broken beak and vaccinate the raccoon unit against a potentially deadly virus.

Determining if Nostradamus predicted Hitler and 9/11; learning why a diving company makes a device to save the life of a tiny bird; examining how a metal sphere smaller than a pinhead can kill a man.

A lavish theater that once accommodated decades of fashionable entertainment is now mysteriously deserted in Cleveland; experts investigate and reveal a destructive performance that would lead to its eventual demise.

Dealing with toxic fallout after a hot real estate market forces Jason and Alisha to buy a house without getting a home inspection; the Holmes team transforms a moldy, radon-filled eyesore into a cozy, healthy place to raise a family.

Inspect the wreck of the Mary Celestia, a Civil War ship raised by a hurricane. Encounter imperial relics exposed by a drought in Iraq, the storm-tossed remains of a medieval man, and long-lost wooden artifacts that reshape Native American history.

Experts examine how engineering failures allowed Hurricane Katrina to devastate New Orleans and cause the collapse of the Tacoma Narrows Bridge.

Daylight returns to the Arctic, bringing new opportunities for residents.

In response to a call to storm Area 51, ufologist Ryan Sprague joins Jennifer Marshall to investigate what sparked the viral movement and what may be hidden inside Area 51.

Investigating significant historic and contemporary sites from the revealing vantage points of drone, satellite and aerial photography.

A Montana small town branded by an infamous jailbreak; how nature trumped greed during an Alaska treasure hunt; a cultural icon from the rough side of New Orleans; the Empire State of the South.

Sign off.

On Aug. 10, 2020, hurricane-force winds blast through Iowa battering the city of Cedar Rapids; this rare Derecho packing powerful straight line winds takes the city by surprise and leaves behind a trail of destruction.

A Montana small town branded by an infamous jailbreak; how nature trumped greed during an Alaska treasure hunt; a cultural icon from the rough side of New Orleans; the Empire State of the South.

Determining if Nostradamus predicted Hitler and 9/11; learning why a diving company makes a device to save the life of a tiny bird; examining how a metal sphere smaller than a pinhead can kill a man.

A man films a weird box-shaped craft flying not far from the top-secret Whiteman Airforce Base in Missouri; a woman in Siberia films the sky erupting on the horizon.

Counting down to the annual deer release, which could get shut down if a government inspection doesn't go according to plan; the staff scramble to help a hawk with a broken beak and vaccinate the raccoon unit against a potentially deadly virus.

Dealing with toxic fallout after a hot real estate market forces Jason and Alisha to buy a house without getting a home inspection; the Holmes team transforms a moldy, radon-filled eyesore into a cozy, healthy place to raise a family.

Zoom in on some otherworldly sights. Spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn, and take a spin around a doughnut-shaped lake in Saskatchewan.

Explore strongholds abandoned by their architects. Look at a lost city in the Amazon jungle, see a desert fortress made by humanity's most notorious empire, explore a city of identical castles, and examine a Greek isle's bloody history from the air.

Peek at landmarks in places where they shouldn't be. Wing your way over an imperial pyramid in the Netherlands, a massive metal sphere in remote Russia, a lion shape carved into an English hillside, and a bare swath cut through an Austrian forest.

Examine strange relics forgotten by time. Visit a perturbing circle of stone in the Golan Heights, a mountain of headless statues in Turkey, a castle left to crumble in the Saudi Arabian desert, and a time-worn secret in the wilds of Peru.

Confront objects that make no sense. Spot a spinning island in an Argentinian marsh, a colossal triangle stuck in the Arizona desert, mysterious multicoloured pools across northern Ethiopia, and a huge human figure hidden in the Australian outback.

Zoom in on some otherworldly sights. Spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn, and take a spin around a doughnut-shaped lake in Saskatchewan.

Meeting Dr. Cori Stephen and Dr. Allison Hay, two vets in two different locations; one resides in the country and the other in the city, but both share their passion for keeping animals, from foxes to pet pigs, happy and healthy.

Paid programming.

Cameras capture a towering 1,600 foot pillar of flame erupting from the Caspian Sea off the coast of Azerbaijan; experts investigate a potential link to the nation's weapons arsenal and military aspirations over disputed neighboring territory.

Cameras capture an intense explosion in Ontario, Calif., that rips apart a suburban home and sends panicked onlookers running for their lives; experts investigate and suspect a potential detonation of an enormous cache of illegal fireworks.

Cameras capture an enormous fireball erupting along with a series of explosions in a North Korean border town; experts investigate and discover a cramped and overcrowded housing project linked to a deadly propane tank disaster.

Uncovering the mystery of the Holy Grail.

Reflect on the collapse of this mighty South American society; contemplate how the technologically advanced Inca Empire, which stretched from Ecuador to Chile, was swiftly dismantled and how the evidence of its existence was nearly lost to history.

Tackle questions about a pharaoh's untimely death at age 19; dig into the physical evidence left behind in his tomb and learn why experts haven't sorted out whether he died of natural causes, poisoning or an accident.

A top-secret European island; an industrial giant born from the ashes of war; a haunting site with evidence of strange burials.

In response to a call to storm Area 51, ufologist Ryan Sprague joins Jennifer Marshall to investigate what sparked the viral movement and what may be hidden inside Area 51.

Hurricane Sally makes landfall along Alabama's Gulf Coast, the first tropical cyclone to do so since 2004; intensifying to a Category 2 storm and turning east just prior to landfall, Sally catches many residents along the panhandle by surprise.

In New Zealand, the White Island volcano erupts with deadly consequences; a major storm pounds the city of Perth, triggering flash flooding, hail and a near-fatal road accident when a tree is blown on top of a driver.

Experts examine the devastating collapse of the Rana Plaza factory in Bangladesh and of the Morandi bridge in Genoa, Italy; investigating how the disasters could have been avoided.

Hurricane Sally makes landfall along Alabama's Gulf Coast, the first tropical cyclone to do so since 2004; intensifying to a Category 2 storm and turning east just prior to landfall, Sally catches many residents along the panhandle by surprise.

In New Zealand, the White Island volcano erupts with deadly consequences; a major storm pounds the city of Perth, triggering flash flooding, hail and a near-fatal road accident when a tree is blown on top of a driver.

Experts examine the devastating collapse of the Rana Plaza factory in Bangladesh and of the Morandi bridge in Genoa, Italy; investigating how the disasters could have been avoided.

The coastal metropolis of Miami faces a triple threat of crumbling limestone bedrock, ferocious superstorms and relentless rising oceans.

An enormous fiery vortex in Redding, California, the island nation of Malta loses a natural treasure, a mysterious radioactive hotspot is discovered near Chernobyl, and an unknown force lays waste to a mountain forest in Italian Alps.

A huge black ring hovers silently over remote prairie land; a perfectly paved yellow highway exists at the bottom of deep ocean; a hiker appears to miraculously levitate above a rocky landscape.

New York City is under attack as Hurricanes Ida and Ian unleash their fury on innocent people; seeing how the latest science and technology can protect New York City's 8 million residents before everything gets swept away by ferocious superstorms.

The West Coast is home to the San Andreas fault, stretching for almost a thousand miles beneath the feet of millions of Americans.

The West Coast is home to the San Andreas fault, stretching for almost a thousand miles beneath the feet of millions of Americans.

The coastal metropolis of Miami faces a triple threat of crumbling limestone bedrock, ferocious superstorms and relentless rising oceans.

The coastal metropolis of Miami faces a triple threat of crumbling limestone bedrock, ferocious superstorms and relentless rising oceans.

Peek at landmarks in places where they shouldn't be. Wing your way over an imperial pyramid in the Netherlands, a massive metal sphere in remote Russia, a lion shape carved into an English hillside, and a bare swath cut through an Austrian forest.

A salvage team discovers the mysterious remains of an enormous shipwreck near Cambridge Bay in the icy waters of the Canadian Arctic; experts investigate and uncover a cutting-edge vessel with links to one of the greatest polar explorers in history.

Mountain climbers in California find the body of a U.S. Army soldier; strange bundles of canvas and wood are discovered on an Alaskan mountain; volcanic glass is found in an unexpected place; a vital World War II weather station is uncovered.

Archaeologists make a grim discovery when they uncover the remains of a mummified boy buried in the frozen Siberian landscape, and as researchers continue their excavation, they uncover 88 additional graves linked to a mysterious, ancient necropolis.

Figuring out who's the creator of a 5,000-year-old carved stone object covered in markings; examining why people believed an electrocution device could cure them.

Examining how an injured skull changed the face of neuroscience; determining if World War 2 had been won by a bat; figuring out if people were making sophisticated multipurpose tools 14,000 years ago.

Determining if a gold death mask is the face of a king who fought in the Trojan Wars; examining if ancient chalk carvings are the secret to constructing the Stonehenge.

A huge complex hiding an explosive past; a decomposing Serbian area with a bittersweet secret; Ghanaian coastal structures hiding a tortured history.

A castle-like building in Washington State that fueled an American treasure hunt; the Southern US site of a murder that ushered in a new era; exploration of an unlikely beacon of progress in a rough Wyoming mining town.

Follow Hope Swinimer and her team as they rescue, treat, and release injured and orphaned wildlife.

Look at a secret desert outpost in Utah where men unleashed hell; entering a forgotten Jacksonville church that became a haven; explore third-hand Japanese buildings in New York and the lair of a birdlike beast that tormented a West Virginia town.

Tour a gun making company town in Connecticut and a Jersey Shore facility that revolutionized transatlantic communication; investigate a Colorado plain that was the site of a brutal labor battle, then check out a fairytale mansion in New Hampshire.

Follow Hope Swinimer and her team as they rescue, treat, and release injured and orphaned wildlife.

Investigating significant historic and contemporary sites from the revealing vantage points of drone, satellite and aerial photography.

An enormous fiery vortex in Redding, California, the island nation of Malta loses a natural treasure, a mysterious radioactive hotspot is discovered near Chernobyl, and an unknown force lays waste to a mountain forest in Italian Alps.

Hurricane Sally makes landfall along Alabama's Gulf Coast, the first tropical cyclone to do so since 2004; intensifying to a Category 2 storm and turning east just prior to landfall, Sally catches many residents along the panhandle by surprise.

A huge complex hiding an explosive past; a decomposing Serbian area with a bittersweet secret; Ghanaian coastal structures hiding a tortured history.

Viewing the remains of a castle-like ruin near Manhattan and a Japanese military stronghold built in response to U.S. gunboat diplomacy; paddling around a beautiful bay that hides a vast mountain complex; pondering the ruins of a decoding landmark.

The ancient city of Samarra contains a series of medieval structures that hold secrets to one of the world's greatest empires; archaeologists use pioneering technology to investigate its astonishing rise to power and reveal its monumental downfall.

A giant crack in the ice continues to be an obstacle for all crews as they try to set nets in deeper water; Mike and Justin are caught flat-footed when the crack shifts and sends a violent ice quake to shake their location.

It's officially the third-highest snowfall in Manitoba in the last century; commercial fishers are plagued by deep drifts and hidden pockets of slush that can stop them in their tracks; Chris finds out the hard way that traveling alone is a bad idea.

With less than a month left in the fishing season, all crews are desperate to catch their remaining quota, and failing to do so means leaving money on the table; Justin and Mike are fighting to hit their target.

All crews race toward the end of the season on March 31, desperate to make quota before they're forced off the ice; emotions run high as the Kristjanson crew surveys the damage and recovers what's left of Trevor's narrow gauge bomber.

Meeting Dr. Cori Stephen and Dr. Allison Hay, two vets in two different locations; one resides in the country and the other in the city, but both share their passion for keeping animals, from foxes to pet pigs, happy and healthy.

Dr. Emma Jackson takes on a new role at one of Calgary's busiest animal rescue shelters; Dr. Allison's love for cats shines through as she provides emergency surgery on an ageing cat with a broken leg.

The bizarre remains of an Old West mining town lie mysteriously deserted high in the mountains of Maggie Valley, N.C.; experts investigate an abandoned ghost town theme park that some local residents believe carries a curse.

Touring a Miami suburb that began as a dream and became a nightmare; visiting a glitzy Beirut high-rise consumed by hate and fear; learning why armed raiders targeted an English pirate vessel.

An eerie set of buildings in Paris is evidence of an unspeakable evil; new discoveries reveal the horrific things that happened here, and why they were abandoned.

Seeing the home of a hush-hush Alabama fraternal organization that changed America and a testament to Allied heroism in North America; looking around a once lavish Beirut complex scarred by tragedy; visiting an elite leadership centre in Greece.

An extensive look into an active cold case investigation involving an unexplained crash in Roswell, N.M., in the summer of 1947; updated eyewitness accounts and expert interviews.

Jennifer Marshall and author MJ Banias head to West Virginia to investigate reports that the Mothman - a mysterious winged creature first spoken of in 1967 - may be back.

Podcast host Sam Tripoli joins Jennifer as she heads to Montauk, N.Y., to investigate stories that the U.S. government was conducting radical experiments on young children - including mind control tests and time travel.

Corroding artifacts in the center of Ethiopia.

The ancient city of Samarra contains a series of medieval structures that hold secrets to one of the world's greatest empires; archaeologists use pioneering technology to investigate its astonishing rise to power and reveal its monumental downfall.

A giant ice stack on a remote lake spouts a strange vapor, dazzling jeweled objects litter a dank cave floor and a man's shout causes a lake to bizarrely react with thousands of ripples.

Look over Seahenge, a Bronze Age timber circle exposed by England's rising seas. Assess an ancient Ukrainian canoe lifted by flood waters, human remains trapped in a Chinese mudslide, and a forgotten relic on the dried-out bottom of Lake Mead.

Hurricane Sally makes landfall along Alabama's Gulf Coast, the first tropical cyclone to do so since 2004; intensifying to a Category 2 storm and turning east just prior to landfall, Sally catches many residents along the panhandle by surprise.

In New Zealand, the White Island volcano erupts with deadly consequences; a major storm pounds the city of Perth, triggering flash flooding, hail and a near-fatal road accident when a tree is blown on top of a driver.

Look over Seahenge, a Bronze Age timber circle exposed by England's rising seas. Assess an ancient Ukrainian canoe lifted by flood waters, human remains trapped in a Chinese mudslide, and a forgotten relic on the dried-out bottom of Lake Mead.

Hurricane Sally makes landfall along Alabama's Gulf Coast, the first tropical cyclone to do so since 2004; intensifying to a Category 2 storm and turning east just prior to landfall, Sally catches many residents along the panhandle by surprise.

A giant ice stack on a remote lake spouts a strange vapor, dazzling jeweled objects litter a dank cave floor and a man's shout causes a lake to bizarrely react with thousands of ripples.

An extensive look into an active cold case investigation involving an unexplained crash in Roswell, N.M., in the summer of 1947; updated eyewitness accounts and expert interviews.

Jennifer Marshall and author MJ Banias head to West Virginia to investigate reports that the Mothman - a mysterious winged creature first spoken of in 1967 - may be back.

Podcast host Sam Tripoli joins Jennifer as she heads to Montauk, N.Y., to investigate stories that the U.S. government was conducting radical experiments on young children - including mind control tests and time travel.

A vanished Neolithic structure in an Irish farmer's field, an ancient oasis in the remote reaches of a Chinese desert, a centuries-old buried treasure in the U.K. and a dreaded predator in the Pacific Ocean are discovered by accident using drones.

A Nazi weapon designed to turn the tides of WWII in Northern France; a secret Russian military tower in the shadow of the Chernobyl disaster; a forgotten Australian tunnel rumored to hide a nuclear lab; something shocking buried under Alcatraz.

Over a hundred massive concrete arrows scattered across America; a giant chalk figure with an oversized phallus on an English hillside; a mysterious hole in the middle of a lake in Southern California.

A Turkish drought reveals a long-lost ancient Basilica and its secrets; a church spire punches through the surface of a toxic sludge in Romania; the hull of a massive ship in the North Sea answers decades old questions.

Nubian pyramids reveal the rise of female power in Ancient Kush; a shocking satellite image uncovers secrets of an ancient ancestral Puebloan site in New Mexico.

Strange markings in the remote reaches of Northern Finland; drones find a Manhattan-sized mystery in the depths of a Vietnamese cave; secrets are no longer hidden in the Antarctic; a lost sky-high world in Mozambique gets a visit from above.

An extensive look into an active cold case investigation involving an unexplained crash in Roswell, N.M., in the summer of 1947; updated eyewitness accounts and expert interviews.

Jennifer Marshall and author MJ Banias head to West Virginia to investigate reports that the Mothman - a mysterious winged creature first spoken of in 1967 - may be back.

Podcast host Sam Tripoli joins Jennifer as she heads to Montauk, N.Y., to investigate stories that the U.S. government was conducting radical experiments on young children - including mind control tests and time travel.

Connect the Great Pyramid to an archeological find near the Suez Canal, then unveil the secrets of colossal rock sculptures in Saudi Arabia. Gaze at a mystical geological formation deep in the Sahara and unmask a 37-million-year-old Egyptian enigma.

Travel to Cairo to examine a stunning find under the Pyramid of Unas' watchful eye. Search for a 16th-century Portuguese shipwreck in the Namib Desert, unearth a WW II plane that crashed in the Sahara, and study a fossilized missing link in Taiwan.

Unveil the legacy of a prehistoric Peruvian hunter and dig up what may be the ruins of a fabled Roman seaside city in Tunisia. Listen to a haunting sand-dune symphony in Mongolia, then catalogue a trove of human and animal bones in Saudi Arabia.

An Illinois area essential to the defence of the US.

The German flagship Cap Arcona served as the set for the 1942 Nazi propaganda feature film "Titanic"; her end would be equally tragic, with an even greater loss of life.

Scientists, historians and archeologists attempt to unravel mysteries of history.

Experts uncover four global stories of extraordinary curiosities that were once concealed in the deserts of the planet.

Determining if the strange objects found hidden inside the Great Pyramid at Giza are the builder's toolkit.

Scientists, historians and archeologists attempt to unravel mysteries of history.

Experts uncover four global stories of extraordinary curiosities that were once concealed in the deserts of the planet.

A truck engulfed in flames barrels down a lonely Brazilian highway, which could be the result of a sudden forest fire; experts investigate the story of a driver who somehow maneuvers his blazing cargo to a safe location.

Hurricane Sally makes landfall along Alabama's Gulf Coast, the first tropical cyclone to do so since 2004; intensifying to a Category 2 storm and turning east just prior to landfall, Sally catches many residents along the panhandle by surprise.

An Illinois area essential to the defence of the US.

Experts examine the devastating collapse of the Rana Plaza factory in Bangladesh and of the Morandi bridge in Genoa, Italy; investigating how the disasters could have been avoided.

Determining if the strange objects found hidden inside the Great Pyramid at Giza are the builder's toolkit.

Reflect on the collapse of this mighty South American society; contemplate how the technologically advanced Inca Empire, which stretched from Ecuador to Chile, was swiftly dismantled and how the evidence of its existence was nearly lost to history.

Tackle questions about a pharaoh's untimely death at age 19; dig into the physical evidence left behind in his tomb and learn why experts haven't sorted out whether he died of natural causes, poisoning or an accident.

Scientists, historians and archeologists attempt to unravel mysteries of history.

Following the debate about Egypt's visionary warrior king, who ruled the country for more than 60 years; learning why scholars can't pin down the origin of his wife, Nefertiti and dig into the strange circumstances surrounding his death at age 90.

Scientists, historians and archeologists attempt to unravel mysteries of history.

A truck engulfed in flames barrels down a lonely Brazilian highway, which could be the result of a sudden forest fire; experts investigate the story of a driver who somehow maneuvers his blazing cargo to a safe location.

Scientists, historians and archeologists attempt to unravel mysteries of history.

Following the debate about Egypt's visionary warrior king, who ruled the country for more than 60 years; learning why scholars can't pin down the origin of his wife, Nefertiti and dig into the strange circumstances surrounding his death at age 90.

Scientists, historians and archeologists attempt to unravel mysteries of history.

Looking at the Oklahoma hotel built with stolen oil money; reflecting on brutality in a Cambodian school turned chamber of horrors; spotting a Latvian telescope that spied on the West; celebrating an Italian tribute to air travel.

Revisit a derelict stadium in Lithuania that hosted an odd Cold War matchup and see an industrial relic that became a UK battleground; explore a Memphis skyscraper that hoped to be a city within a city.

Scattered around the world are long-forgotten engineering marvels, decaying cities and empty factories that once stood on the cutting edge of design and construction. Today they are discarded, dangerous, and some of them are even deadly. "Mysteries of the Abandoned" reveals why these engineering triumphs were built and how they were left to crumble. In each hourlong episode, stories tell of who originally designed the structure, its historical significance, and why it was ultimately no longer viable. California's Goat Canyon Trestle railway, Pennsylvania's Kinzua Viaduct steel bridge, the Grand Goulets Road in the French Alps, and Hashima Island, a once thriving and now deserted Japanese island, are among episode subjects.

A gargantuan piece of Soviet engineering; dilapidated structures that served as the launch pad for a deadly voyage; a top-secret facility in the Midwest.

Experts uncover four global stories of extraordinary curiosities that were once concealed in the deserts of the planet.

An enormous fiery vortex in Redding, California, the island nation of Malta loses a natural treasure, a mysterious radioactive hotspot is discovered near Chernobyl, and an unknown force lays waste to a mountain forest in Italian Alps.

A huge black ring hovers silently over remote prairie land; a perfectly paved yellow highway exists at the bottom of deep ocean; a hiker appears to miraculously levitate above a rocky landscape.

Viewing the remains of a castle-like ruin near Manhattan and a Japanese military stronghold built in response to U.S. gunboat diplomacy; paddling around a beautiful bay that hides a vast mountain complex; pondering the ruins of a decoding landmark.

An enormous fiery vortex in Redding, California, the island nation of Malta loses a natural treasure, a mysterious radioactive hotspot is discovered near Chernobyl, and an unknown force lays waste to a mountain forest in Italian Alps.

A giant ice stack on a remote lake spouts a strange vapor, dazzling jeweled objects litter a dank cave floor and a man's shout causes a lake to bizarrely react with thousands of ripples.

Touring a Miami suburb that began as a dream and became a nightmare; visiting a glitzy Beirut high-rise consumed by hate and fear; learning why armed raiders targeted an English pirate vessel.

An eerie set of buildings in Paris is evidence of an unspeakable evil; new discoveries reveal the horrific things that happened here, and why they were abandoned.

Seeing the home of a hush-hush Alabama fraternal organization that changed America and a testament to Allied heroism in North America; looking around a once lavish Beirut complex scarred by tragedy; visiting an elite leadership centre in Greece.

A truck engulfed in flames barrels down a lonely Brazilian highway, which could be the result of a sudden forest fire; experts investigate the story of a driver who somehow maneuvers his blazing cargo to a safe location.

Viewing the remains of a castle-like ruin near Manhattan and a Japanese military stronghold built in response to U.S. gunboat diplomacy; paddling around a beautiful bay that hides a vast mountain complex; pondering the ruins of a decoding landmark.

The lost city of Olous: A great metropolis submerged in the Mediterranean; archaeologists uncover its secrets using pioneering technology and CGI reconstruction.

New technologies reveal the startling truth behind the largest temple ever built, Angkor Wat; accompany experts as they uncover how this colossal structure was constructed and why one of the largest cities in the world was suddenly abandoned.

A weird white dome appears over a valley that is famous for UFO sightings; engineers try to work out why a huge bridge collapses on a clear blue day; why square waves in the sea are a sign to get out of the water.

A mysterious glowing green entity is seen in Australia's nighttime sky; footage of a twisting fire worm may confirm a local legend about a cave-dwelling super serpent.

A paradise beach in the Bahamas is transformed as the ocean simply vanishes; a woman films the silhouette of a 12-foot monster lurking in the fog.

Examine strange relics forgotten by time. Visit a perturbing circle of stone in the Golan Heights, a mountain of headless statues in Turkey, a castle left to crumble in the Saudi Arabian desert, and a time-worn secret in the wilds of Peru.

Examining if a machine can read one's personality; figuring out why an ancient mask has human blood painted on it.

Determining if Nostradamus predicted Hitler and 9/11; learning why a diving company makes a device to save the life of a tiny bird; examining how a metal sphere smaller than a pinhead can kill a man.

Determining if the strange objects found hidden inside the Great Pyramid at Giza are the builder's toolkit.

A strange structure in New York becomes a testing ground for Nazi technology; a thriving amusement park is laid to ruins by an unstoppable force of nature; an island becomes a major player in a controversial industry.

Look at a secret desert outpost in Utah where men unleashed hell; entering a forgotten Jacksonville church that became a haven; explore third-hand Japanese buildings in New York and the lair of a birdlike beast that tormented a West Virginia town.

Hurricane Sally makes landfall along Alabama's Gulf Coast, the first tropical cyclone to do so since 2004; intensifying to a Category 2 storm and turning east just prior to landfall, Sally catches many residents along the panhandle by surprise.

The bizarre remains of an Old West mining town lie mysteriously deserted high in the mountains of Maggie Valley, N.C.; experts investigate an abandoned ghost town theme park that some local residents believe carries a curse.

Hurricane Sally makes landfall along Alabama's Gulf Coast, the first tropical cyclone to do so since 2004; intensifying to a Category 2 storm and turning east just prior to landfall, Sally catches many residents along the panhandle by surprise.

Determining if the strange objects found hidden inside the Great Pyramid at Giza are the builder's toolkit.

The German flagship Cap Arcona served as the set for the 1942 Nazi propaganda feature film "Titanic"; her end would be equally tragic, with an even greater loss of life.

Experts uncover four global stories of extraordinary curiosities that were once concealed in the deserts of the planet.

Viewing the remains of a castle-like ruin near Manhattan and a Japanese military stronghold built in response to U.S. gunboat diplomacy; paddling around a beautiful bay that hides a vast mountain complex; pondering the ruins of a decoding landmark.

A castle-like building in Washington State that fueled an American treasure hunt; the Southern US site of a murder that ushered in a new era; exploration of an unlikely beacon of progress in a rough Wyoming mining town.

Get petrified by cryptic rock structures normally hidden from view. Look inside curious dwellings in the Peruvian Andes, visit a sacred monolith in Wyoming's Black Hills, haunt a Turkish stone village, and spot an immovable waterfall in Mexico.

Puzzle over an out-of-place relic from World War II and get a bird's-eye view of stone circles in Norway; examine mysterious, ancient mounds on the banks of the Mississippi and uncover the dark history of a medieval English village.

Balancing on a knife's edge as a crucial bridge is left hanging over a canyon on California's Pacific Coast Highway; a high-speed train disaster in Germany; a Vegas casino inferno; a sinking feeling in an Australian apartment building.

Aiming high to see what brought down an iconic space telescope in Puerto Rico and a high-rise construction project in Virginia; looking into the mysterious destruction of a U.K. roadway; watching a ship topple a bridge in the U.S. state of Georgia.

New York residents get a rude awakening when a disastrous crane collapse causes chaos on the downtown streets of Manhattan; experts use the latest tech to investigate and reveal how a slight increase in wind conditions created major catastrophe.

Drones reveal what's left of Henry Ford's American suburb in the Brazilian jungle; clues to what killed a once-vibrant Pennsylvania mining town; an aerial glimpse of New York's forgotten ghost town; an Italian Renaissance reduced to dust.

As seen from space, a crater in Turkmenistan, is on fire; drones reveal perfect circles in the Namibian desert; A puzzle is solved by a World War 2 code breaker; Mystery of Death Valley's self-moving stones; Utah's strange electric blue ponds.

A remote island linked to one of the world's most famous aviation mysteries; thousands of shipwrecks in the Bermuda triangle; a history lost and found in the South Pacific; a 10,000-year-old mystery in the murky depths of the Yucatan Peninsula.

When seen from above, the pyramids of Giza align with the stars; survivors of Katrina find rescue when least expected; a volcano burns bright blue; a forgotten beach reveals its secrets.

Strange aquatic mammals populating a river in Columbia; A ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; A Boeing 727 jetliner hidden in a pine forest; A giant, unusual pattern is discovered in the Nevada desert.

Zoom in on some otherworldly sights. Spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn, and take a spin around a doughnut-shaped lake in Saskatchewan.

The secrets of a dilapidated concrete wall wedged perilously into the Italian mountains; peek at five eerie circular structures on a Cuban island; explore a former American escape route from nuclear Armageddon; a submerged link to D-Day.

Scattered across the United States are abandoned structures, forgotten ruins of the past and monuments to a bygone era that reveal the secrets of a hidden America.

Touring a Miami suburb that began as a dream and became a nightmare; visiting a glitzy Beirut high-rise consumed by hate and fear; learning why armed raiders targeted an English pirate vessel.

An eerie set of buildings in Paris is evidence of an unspeakable evil; new discoveries reveal the horrific things that happened here, and why they were abandoned.

Seeing the home of a hush-hush Alabama fraternal organization that changed America and a testament to Allied heroism in North America; looking around a once lavish Beirut complex scarred by tragedy; visiting an elite leadership centre in Greece.

Look over Seahenge, a Bronze Age timber circle exposed by England's rising seas. Assess an ancient Ukrainian canoe lifted by flood waters, human remains trapped in a Chinese mudslide, and a forgotten relic on the dried-out bottom of Lake Mead.

Experts examine the devastating collapse of the Rana Plaza factory in Bangladesh and of the Morandi bridge in Genoa, Italy; investigating how the disasters could have been avoided.

Alaskans face uncertainty in their quest to thrive in the warm season.

Jennifer and Jordan investigate claims that a vortex for supernatural forces is causing ships and planes to vanish without a trace.

An enormous fiery vortex in Redding, California, the island nation of Malta loses a natural treasure, a mysterious radioactive hotspot is discovered near Chernobyl, and an unknown force lays waste to a mountain forest in Italian Alps.

A castle-like building in Washington State that fueled an American treasure hunt; the Southern US site of a murder that ushered in a new era; exploration of an unlikely beacon of progress in a rough Wyoming mining town.

Sign off.

Hurricane Sally makes landfall along Alabama's Gulf Coast, the first tropical cyclone to do so since 2004; intensifying to a Category 2 storm and turning east just prior to landfall, Sally catches many residents along the panhandle by surprise.

A castle-like building in Washington State that fueled an American treasure hunt; the Southern US site of a murder that ushered in a new era; exploration of an unlikely beacon of progress in a rough Wyoming mining town.

Determining if the strange objects found hidden inside the Great Pyramid at Giza are the builder's toolkit.

A truck engulfed in flames barrels down a lonely Brazilian highway, which could be the result of a sudden forest fire; experts investigate the story of a driver who somehow maneuvers his blazing cargo to a safe location.

Explore strongholds abandoned by their architects. Look at a lost city in the Amazon jungle, see a desert fortress made by humanity's most notorious empire, explore a city of identical castles, and examine a Greek isle's bloody history from the air.

Visit a dilapidated Texas landmark that was the epicentre of a violent revolution; explore a secret German facility that allowed a dictator to evade justice; check out an all-female paramilitary base in Ireland and a Spanish ghost town.

Take a deep dive into watery enigmas. Glide over a sunken Italian city, a unique underwater cemetery in the Florida Keys, a yellow brick road to nowhere in the depths of the South Pacific, and puzzling rocky constructions off the coast of Australia.

Psychedelic swirls in the Utah wastelands; a bizarre configuration of circles in the Sahara; hidden lines with the help of a drone; a remote polka-dot lake in Canada.

Tower over amazing metropolises. Learn why an important urban centre is sinking toward oblivion, soar over sprawling ruins buried under Saharan sands, learn the modern secret of an ancient fortress, and eye a ghost town on the edge of the Gobi.

Get petrified by cryptic rock structures normally hidden from view. Look inside curious dwellings in the Peruvian Andes, visit a sacred monolith in Wyoming's Black Hills, haunt a Turkish stone village, and spot an immovable waterfall in Mexico.

Witness jaw-dropping animal spectacles from high above the Earth. Watch a whirling herd of northern nomads, see undersea behemoths show off in the Pacific shallows, track a US porcine stampede, and confront top ocean predators on the Florida coast.

Six people embark on a journey in the footsteps of their ancestors from Elders and knowledge keepers.

Paid programming.

Hurricane Sally makes landfall along Alabama's Gulf Coast, the first tropical cyclone to do so since 2004; intensifying to a Category 2 storm and turning east just prior to landfall, Sally catches many residents along the panhandle by surprise.

Aiming high to see what brought down an iconic space telescope in Puerto Rico and a high-rise construction project in Virginia; looking into the mysterious destruction of a U.K. roadway; watching a ship topple a bridge in the U.S. state of Georgia.

Encounter kids' drawings on the walls in Pompeii that expose the city's violent gladiatorial past. Check out a mythical sculpture unearthed by an Indian tsunami, a 12-century temple in quake-prone Mexico, and a sunken ship in Utah's Great Salt Lake.

A clifftop castle with bloody secrets; an imposing structure on the border of North Korea; a high-tech installation atop Alaska's wild mountains.

Archaeologists discover human remains during an excavation of a fifth-century fort on the Swedish island of Oland; after further investigation, experts unearth 26 skeletons and uncover the site of an ancient massacre.

In the Philippines, the Taal volcano violently erupts; a snowboarder in Utah rescues himself from a snowy mountain; in the Grand Canyon, mud and rocks barrel down on a group of tourists.

A clifftop castle with bloody secrets; an imposing structure on the border of North Korea; a high-tech installation atop Alaska's wild mountains.

Jennifer and Jordan investigate claims that a vortex for supernatural forces is causing ships and planes to vanish without a trace.