An exploration of China's first emperor's mausoleum, highlighted by 8,000 terra-cotta warriors who guard the royal tomb.

The dramatic history of Princess Fu Hao, who rose from the leader of a warrior clan, to then become a key advisor, general and wife of King Wu Ding of the Shang Dynasty.

Journeying to the heart of Mongolia for a look at modern nomadic life, which hasn't changed much in 800 years; exploring artifacts and a 13th-century archery technique; how the murder of Genghis Khan's father set the wheels of history in motion.

Investigating the seasonality of nomadic life and how traditional animal practices helped Mongol armies outmanoeuvre their enemies; a look at Genghis Khan's trade and communication strategies and the empire's fate after his death in 1227.

An epic, high-altitude journey from Seven Sisters Provincial Park to Salmon Glacier.

The vast and diverse terrain that lies at the border of Canada and the United States.

The Western Nunavut region is one of the most sporadically-seen landscapes on Earth. We examine the community of Kugluktuk - Tukut Nogait National Park - and further west, the tiny hamlet of Paulatuk.

John Norton leads Six Nations warriors against the invading Americans.

East coast shipper creates a private fleet to seize American ships.

New discoveries and new science tell the story of how the ancient Mayans built such an incredible society in a tropical rainforest over two thousand years and then vanished.

New discoveries reveal caves and tunnels hidden beneath Mayan pyramids; archaeologists identify the location revered as the most sacred temple of all, the mystical center of the world, unlocking an incredible secret in the city of Chichen Itza.

The downfall of the powerful Maya city of Palenque continues to mystify archaeologists today; now, investigators gain rare access to explore lost tombs to reveal the truth behind this legendary city and the mystery behind its enigmatic queens.

An inside look at how the world's most eminent structures define national identity and the engineering techniques used to create them.

A great metropolis has been discovered, buried beneath the pastures of the Danube.

Archaeologists investigate the fate of Nero and his buried Golden Palace.

An exploration of Hadrian's Wall, the largest structure built by the Romans; experts examine the Wall, its forts, gatehouses, and garrison town to see how civilization and culture grew.

An exploration of Herculaneum, the twin to Pompeii that also got buried during a deadly volcanic eruption; the discovery of an intact skeleton, the first excavated in 25 years, helps investigators piece together the final hours of Herculaneum.

An inside look at how the world's most eminent structures define national identity and the engineering techniques used to create them.

Exploring the mysterious and catastrophic collapse of ancient civilizations during the late Bronze Age, revealing the tumultuous events that brought an end to a thriving era of human history.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

Exploring the mysterious and catastrophic collapse of ancient civilizations during the late Bronze Age, revealing the tumultuous events that brought an end to a thriving era of human history.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

Scientists enter the rainforests of Barro Colorado Island, Panama to study its wildlife and the worst drought in ages.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

Exploring the mysterious and catastrophic collapse of ancient civilizations during the late Bronze Age, revealing the tumultuous events that brought an end to a thriving era of human history.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

The Bruce Peninsula is the largest natural landscape remaining in Southern Ontario.

The Pacific Rim National Park Reserve is one of Canada's most beautiful and powerful parks.

A salvage maestro returns to raise more valuable tropical hardwood trying not to wreck his own boat in the process; the multimillion dollar operation to salvage America's biggest shipwreck.

St. John's Newfoundland and the Avalon peninsula to the unique islands.

From St. John's heading north, the coastline is a maze of bays and inlets.

From the waters of Juan de Fuca Strait to Gulf Islands National Park Reserve.

Yellowstone Park in the United States is the scene of an inexplicable phenomenon: the disappearance of the moose; between wolves, cougars and grizzly bears, the list of suspects is long and scientists conduct a survey to save the moose.

A look at the life of Lord Mountbatten, the uncle of Prince Philip, and his efforts to get as close to the British throne as he could.

Dig up an epic find in South Dakota that fuels suspicion and misfortune, then examine an Egyptian boy king's tomb plagued by an ancient curse. Study a haunted English painting and ponder a relic coveted by a king that may have doomed his reign.

An examination of humankind's impact on the Earth's surface and what alternatives are being explored to reverse the damages.

A look at the life of Lord Mountbatten, the uncle of Prince Philip, and his efforts to get as close to the British throne as he could.

Dig up an epic find in South Dakota that fuels suspicion and misfortune, then examine an Egyptian boy king's tomb plagued by an ancient curse. Study a haunted English painting and ponder a relic coveted by a king that may have doomed his reign.

In April 1945, the Yamato, the largest battleship in history, leaves for Okinawa to destroy American warships and prevent their landing; weighing 70,000 tonnes and armed with 150 guns, it faced the U.S.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

Witness amazing buildings, bridges, lifts, and other structures that pushed structural concrete engineering to the edge.

Exploring the mysterious and catastrophic collapse of ancient civilizations during the late Bronze Age, revealing the tumultuous events that brought an end to a thriving era of human history.

Join us as we travel across Myanmar, the jewel of Asia, and reveal the history and myths surrounding these shrines, each one created as an offering to the Buddha.

Jesus' baptism by John the Baptist; Jesus' message that formed the basis of the future Christian religion.

Exploring the mysterious and catastrophic collapse of ancient civilizations during the late Bronze Age, revealing the tumultuous events that brought an end to a thriving era of human history.

Join us as we travel across Myanmar, the jewel of Asia, and reveal the history and myths surrounding these shrines, each one created as an offering to the Buddha.

Jesus' baptism by John the Baptist; Jesus' message that formed the basis of the future Christian religion.

Yellowstone Park in the United States is the scene of an inexplicable phenomenon: the disappearance of the moose; between wolves, cougars and grizzly bears, the list of suspects is long and scientists conduct a survey to save the moose.

Exploring the mysterious and catastrophic collapse of ancient civilizations during the late Bronze Age, revealing the tumultuous events that brought an end to a thriving era of human history.

Join us as we travel across Myanmar, the jewel of Asia, and reveal the history and myths surrounding these shrines, each one created as an offering to the Buddha.

Jesus' baptism by John the Baptist; Jesus' message that formed the basis of the future Christian religion.

This oldest National Park in the Canadian Maritimes is home to the highest density of moose in the world.

The Torngat Mountains National Park was set up in part to return the aboriginal people to their birthright.

The team must remove thousands of wrecked cars from the hull before it becomes an environmental disaster; repairing a vessel before the waters of the River Solent flood the hull.

A rich mix of coastal towns, islands, inland mountains and seascapes from Nanaimo to Campbell River.

From scenic Telegraph Cove, around Cape Scott Provincial Park, and beyond.

A collection of scenic towns, parks and coastal rainforest unique in the world.

World-famous mammoth expert Dick Mol traces the history of woolly mammoths.

An in-depth look at the life of Princess Margaret reveals how her rebellious behavior paved the way for the monarchy we know today.

Stumble upon the largest Anglo-Saxon hoard in the wake of an ominous storm, then assess a precious stone's bloody curse. Discover the unforeseen consequences of disturbing an immortal Chinese army and get mesmerized by a divisive Egyptian sculpture.

An examination of the Earth's freshwater supply and the ongoing challenge to maintain its quantity and quality as the planet's population soars.

An in-depth look at the life of Princess Margaret reveals how her rebellious behavior paved the way for the monarchy we know today.

Stumble upon the largest Anglo-Saxon hoard in the wake of an ominous storm, then assess a precious stone's bloody curse. Discover the unforeseen consequences of disturbing an immortal Chinese army and get mesmerized by a divisive Egyptian sculpture.

In May 1905, after a year of stalemate in the Russo-Japanese War, Russia's Pacific squadron arrives at the Tsushima Strait.

Exploring the mysterious and catastrophic collapse of ancient civilizations during the late Bronze Age, revealing the tumultuous events that brought an end to a thriving era of human history.

Jesus' baptism by John the Baptist; Jesus' message that formed the basis of the future Christian religion.

A secret structure on a sinister mountain, an industrial compound swallowed by a forest, and a mysterious run in a sand dune are strange deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.

The Far South of Australia is home to the rich cultural heritage of Melbourne, a sporting mecca called the 'G, a brutal island prison once known as Hell on Earth, and ancient rainforests, providing a living link to the past.

Recently unearthed mummies may help solve the enduring mystery of why Pompeii was built on an active volcano; archaeologists explore the secrets of an ancient Roman town perfectly preserved after the devastating eruption of Mount Vesuvius.

A secret structure on a sinister mountain, an industrial compound swallowed by a forest, and a mysterious run in a sand dune are strange deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.

The Far South of Australia is home to the rich cultural heritage of Melbourne, a sporting mecca called the 'G, a brutal island prison once known as Hell on Earth, and ancient rainforests, providing a living link to the past.

Recently unearthed mummies may help solve the enduring mystery of why Pompeii was built on an active volcano; archaeologists explore the secrets of an ancient Roman town perfectly preserved after the devastating eruption of Mount Vesuvius.

World-famous mammoth expert Dick Mol traces the history of woolly mammoths.

A secret structure on a sinister mountain, an industrial compound swallowed by a forest, and a mysterious run in a sand dune are strange deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.

The Far South of Australia is home to the rich cultural heritage of Melbourne, a sporting mecca called the 'G, a brutal island prison once known as Hell on Earth, and ancient rainforests, providing a living link to the past.

Recently unearthed mummies may help solve the enduring mystery of why Pompeii was built on an active volcano; archaeologists explore the secrets of an ancient Roman town perfectly preserved after the devastating eruption of Mount Vesuvius.

Riding Mountain National Park in Manitoba.

Fundy National Park in southern New Brunswick.

Salvage crews work to install the world's largest environmental protection barrier; flying into a highly volatile region, crews battle pirates, tornadoes, and riots to salvage a wrecked cargo ship.

BC's lower mainland is a mix of remote mountain ranges, spectacular cityscapes and marine life.

The Sea to Sky corridor reveals one of the west coast's most iconic landscapes.

The Sunshine coast features world famous mountain ranges, forest landscapes and iconic towns.

Revisiting the life of a legendary woman whose story continues to gain new resonance over time, even now on the 400-year anniversary of her death in March 1617.

From her brilliant performance during WWII to her demotion after the death of George VI to her continuing influence over Elizabeth II for half a century, the private life of the Queen Mother is explored.

Unearthing a doomed ice age discovery in Russia's Arctic; unveiling a Dutch painting that spells misfortune; digging up a king's unlikely final resting place in an English marsh.

Looking at the engineering genius that's taken repurposing underground, from a rotting shipyard transformed into a subterranean museum to a rusting bank vault that now serves cocktails.

From her brilliant performance during WWII to her demotion after the death of George VI to her continuing influence over Elizabeth II for half a century, the private life of the Queen Mother is explored.

Unearthing a doomed ice age discovery in Russia's Arctic; unveiling a Dutch painting that spells misfortune; digging up a king's unlikely final resting place in an English marsh.

On D-Day and later in June 1944, the USS Texas helps silence batteries of German artillery and gun positions defending the landing beaches and the port city of Cherbourg.

The Far South of Australia is home to the rich cultural heritage of Melbourne, a sporting mecca called the 'G, a brutal island prison once known as Hell on Earth, and ancient rainforests, providing a living link to the past.

Recently unearthed mummies may help solve the enduring mystery of why Pompeii was built on an active volcano; archaeologists explore the secrets of an ancient Roman town perfectly preserved after the devastating eruption of Mount Vesuvius.

A look at some of the most incredible escapes of World War II.

24-year-old wing commander Guy Gibson has less than eight weeks to recruit and train 147 aircrew for a top-secret mission; they are required to learn to fly at super-low altitudes at night toward targets on water.

Dictators may appear omnipotent, but their position depends largely on a network of individuals who benefit from their rule, and their support does not come cheap.

A look at some of the most incredible escapes of World War II.

24-year-old wing commander Guy Gibson has less than eight weeks to recruit and train 147 aircrew for a top-secret mission; they are required to learn to fly at super-low altitudes at night toward targets on water.

Dictators may appear omnipotent, but their position depends largely on a network of individuals who benefit from their rule, and their support does not come cheap.

Revisiting the life of a legendary woman whose story continues to gain new resonance over time, even now on the 400-year anniversary of her death in March 1617.

A look at some of the most incredible escapes of World War II.

24-year-old wing commander Guy Gibson has less than eight weeks to recruit and train 147 aircrew for a top-secret mission; they are required to learn to fly at super-low altitudes at night toward targets on water.

Dictators may appear omnipotent, but their position depends largely on a network of individuals who benefit from their rule, and their support does not come cheap.

Terra Nova National Park on the Newfoundland coast is a beautiful enigma with a rugged forest.

Quttinirpaaq National Park is affected by climate change.

In rough water, salvors scramble to retrieve a cruise ship's anchor lost at sea; teams hope to salvage cherished floating homes damaged by hurricane Sandy.

Exploring offshore islands, inland volcanoes and forgotten World War II defense fortifications north of Powell River.

BC's inland waterways.

An epic, high-altitude journey from Seven Sisters Provincial Park to Salmon Glacier.

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.

From the USS Langley to the high-tech floating airports; the history of the aircraft carrier and how its air wing operates.

A behind-the-scenes look at how the U.S. Navy's radically redesigned Ford-class aircraft carrier was built.

In April 1945, the Yamato, the largest battleship in history, leaves for Okinawa to destroy American warships and prevent their landing; weighing 70,000 tonnes and armed with 150 guns, it faced the U.S.

In May 1905, after a year of stalemate in the Russo-Japanese War, Russia's Pacific squadron arrives at the Tsushima Strait.

On D-Day and later in June 1944, the USS Texas helps silence batteries of German artillery and gun positions defending the landing beaches and the port city of Cherbourg.

A look at some of the most incredible escapes of World War II.

Wallis tries to get his revolutionary bouncing bomb to work, which will require the invention of a new aiming device; Dan Snow takes to the skies to test it, but accuracy isn't the only problem.

Dictators are characterized as charismatic, narcissistic and sadistic, but most of all by their thirst for power; once in power, holding on to it requires negotiation, coercion and force.

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

German U-boats roam the seas in packs, threatening to starve Britain into submission during World War II.

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

German U-boats roam the seas in packs, threatening to starve Britain into submission during World War II.

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.

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

German U-boats roam the seas in packs, threatening to starve Britain into submission during World War II.

Visitors from around the world come to La Maurice National Park each fall when the leaves change.

The Gulf Island National Park sits between the development of Vancouver Island and British Columbia.

Crews work around the clock to build the world's largest underwater concrete bed to salvage the Costa Concordia; operating in secrecy, teams work under high security to repair one of the world's most iconic cruise liners.

An epic, high-altitude journey from Seven Sisters Provincial Park to Salmon Glacier.

The creation legends of Naikoon Provincial Park; rich sea lion colonies; remote lighthouses.

A cultural and geological past told through the stunning landscape of Gwaii Haanas National Park Reserve.

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.

A look at a group of animals that thrive in the tough conditions of the Tibetan Plateau.

Egyptologists investigate rumors that the discovery of King Tutankhamun's tomb unleashed a deadly curse.

Dig up an epic find in South Dakota that fuels suspicion and misfortune, then examine an Egyptian boy king's tomb plagued by an ancient curse. Study a haunted English painting and ponder a relic coveted by a king that may have doomed his reign.

Stumble upon the largest Anglo-Saxon hoard in the wake of an ominous storm, then assess a precious stone's bloody curse. Discover the unforeseen consequences of disturbing an immortal Chinese army and get mesmerized by a divisive Egyptian sculpture.

Unearthing a doomed ice age discovery in Russia's Arctic; unveiling a Dutch painting that spells misfortune; digging up a king's unlikely final resting place in an English marsh.

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

German U-boats roam the seas in packs, threatening to starve Britain into submission during World War II.

A wildlife invasion delays a flight, a massive airliner attempts a night landing at a bush airport, cargo handlers rush to deliver flowers in time for Mother's Day, and a patrol plane discovers fires raging through Kruger Nation.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S.

Exploring the engineering and architectural masterpieces like The Copper in Manhattan to Gardens By the Bay in Singapore.

A wildlife invasion delays a flight, a massive airliner attempts a night landing at a bush airport, cargo handlers rush to deliver flowers in time for Mother's Day, and a patrol plane discovers fires raging through Kruger Nation.

Exploring the engineering and architectural masterpieces like The Copper in Manhattan to Gardens By the Bay in Singapore.

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.

A wildlife invasion delays a flight, a massive airliner attempts a night landing at a bush airport, cargo handlers rush to deliver flowers in time for Mother's Day, and a patrol plane discovers fires raging through Kruger Nation.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S.

Exploring the engineering and architectural masterpieces like The Copper in Manhattan to Gardens By the Bay in Singapore.

Killarney Provincial Park acted as a battleground early in the environmental movement.

Nanabijou's trails may affect dear, wolf, and moose populations.

Salvaging a 50-foot motor yacht in Islamorda, Fla.; a 44-foot launch hung up on a dam on the Mississippi River; repairing a major storm gate in the British Isles.

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.

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.

The dramatic history of Princess Fu Hao, who rose from the leader of a warrior clan, to then become a key advisor, general and wife of King Wu Ding of the Shang Dynasty.

An in-depth look at the life of China's first emperor, Qin Shi Huang, reveals new truths about his controversial rule.

From a Boeing 747 transformed into a residential roof to a revolutionary sci-fi theatre made from a relic of the Industrial Revolution, looking at two showstopping structures that have pushed repurposing innovation to its absolute limits.

The dramatic history of Princess Fu Hao, who rose from the leader of a warrior clan, to then become a key advisor, general and wife of King Wu Ding of the Shang Dynasty.

An in-depth look at the life of China's first emperor, Qin Shi Huang, reveals new truths about his controversial rule.

Rare archive footage charts the German Army in 1940 as it unleashes a new Blitzkrieg tactic.

A secret structure on a sinister mountain, an industrial compound swallowed by a forest, and a mysterious run in a sand dune are strange deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.

Join us as we travel across Myanmar, the jewel of Asia, and reveal the history and myths surrounding these shrines, each one created as an offering to the Buddha.

An exploration of the Cyclades in the Aegean Sea; exploring the tourist hotspots of Mykonos and Santoríni to Náxos and Amorgós.

A pilot races to fly food to a homesteader. Entrepreneurs reviving a 1940's airframe land on ice to prove it can be the future of bush flying. Trainee plane mechanics face a crucial test, and an airport night guardian calls time.

An SOS from an island of penguins sends a helicopter team on an emergency mission; a young pilot attempts a record-breaking flight; aircraft maintenance teams tackle a dangerous fluid leak; vets in Zambia stop a war between humans and elephants.

An exploration of the Cyclades in the Aegean Sea; exploring the tourist hotspots of Mykonos and Santoríni to Náxos and Amorgós.

A pilot races to fly food to a homesteader. Entrepreneurs reviving a 1940's airframe land on ice to prove it can be the future of bush flying. Trainee plane mechanics face a crucial test, and an airport night guardian calls time.

An SOS from an island of penguins sends a helicopter team on an emergency mission; a young pilot attempts a record-breaking flight; aircraft maintenance teams tackle a dangerous fluid leak; vets in Zambia stop a war between humans and elephants.

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.

An exploration of the Cyclades in the Aegean Sea; exploring the tourist hotspots of Mykonos and Santoríni to Náxos and Amorgós.

A pilot races to fly food to a homesteader. Entrepreneurs reviving a 1940's airframe land on ice to prove it can be the future of bush flying. Trainee plane mechanics face a crucial test, and an airport night guardian calls time.

An SOS from an island of penguins sends a helicopter team on an emergency mission; a young pilot attempts a record-breaking flight; aircraft maintenance teams tackle a dangerous fluid leak; vets in Zambia stop a war between humans and elephants.

Quetico Provincial Park pioneers forest fire strategies and faces a declining moose population.

The jewel of the Ontario parks system gives a muse to Tom Thompson and draws many researchers.

Jeremy Birch takes on a salvage to raise a vessel with a concrete hull; it's been in the Fraser River for a month, collecting silt and mud, adding 30 tons to its deadweight.

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.

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.

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.

The tragic story of Archduke Maximilian and the series of unfortunate circumstances that doomed his reign over Mexico.

An exploration of China's first emperor's mausoleum, highlighted by 8,000 terra-cotta warriors who guard the royal tomb.

Be it an 866 million Euro concert hall fifty metres in the sky, or a revolutionary underground farm thirty metres underground, repurposing pioneers are showing that the possibilities for abandoned structures are endless.

The tragic story of Archduke Maximilian and the series of unfortunate circumstances that doomed his reign over Mexico.

An exploration of China's first emperor's mausoleum, highlighted by 8,000 terra-cotta warriors who guard the royal tomb.

Cameras roll as Nazi Germany launches an all-out assault on the Soviet Union.

A pilot races to fly food to a homesteader. Entrepreneurs reviving a 1940's airframe land on ice to prove it can be the future of bush flying. Trainee plane mechanics face a crucial test, and an airport night guardian calls time.

An SOS from an island of penguins sends a helicopter team on an emergency mission; a young pilot attempts a record-breaking flight; aircraft maintenance teams tackle a dangerous fluid leak; vets in Zambia stop a war between humans and elephants.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S.

Exploring the mysterious and catastrophic collapse of ancient civilizations during the late Bronze Age, revealing the tumultuous events that brought an end to a thriving era of human history.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S.

Exploring the mysterious and catastrophic collapse of ancient civilizations during the late Bronze Age, revealing the tumultuous events that brought an end to a thriving era of human history.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

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.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S.

Exploring the mysterious and catastrophic collapse of ancient civilizations during the late Bronze Age, revealing the tumultuous events that brought an end to a thriving era of human history.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

Determining the effect of global warming on the park's glaciers and wolverine population.

A healthy bison population is threatened by where they eat.

Chris Ward sets out with Josh Moreira and Ward's younger brother to salvage a light aircraft that's sitting on the seabed; Jeremy Birch braves the arctic conditions to salvage two vessels that have fallen prey to the crushing ice conditions.

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.

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.

Julie Montagu reveals how she maintains her family's estate and royal duties while staying true to her American roots.

Archaeologists use modern technology to determine if the reputation of China's only empress is based on fact.

Exploring two extraordinary structures which have been transformed: an abandoned New York rail line repurposed into a scenic public park and a former church transformed into a community hub.

Julie Montagu reveals how she maintains her family's estate and royal duties while staying true to her American roots.

Archaeologists use modern technology to determine if the reputation of China's only empress is based on fact.

Footage of life and death on the battlefield of El Alamein and behind the lines in the African desert.