Matty goes blackwater river diving in search of the legendary Revolutionary War treasure of British army officer Charles Cornwallis.

Is a dead mermaid really preserved in Japan? And are UFOs attracted to nuclear facilities.

Icons of the Royal Navy in different eras, the Belfast and the Harrier have earned their place in history for different reasons.

Two of the most produced combat machines in World War II managed to stay relevant until the end of the war through constant modernization and new variants.

Do India's Sanskrit texts, with their descriptions of advanced technology, lend themselves to the theory that aliens once walked amongst us.

The Monoliths: Giorgio Tsoukalos takes a closer look at the evidence as he asks whether Earth's stone monoliths were built with extra terrestrial help.

Alien encounters have offered a possible glimpse into the secrets of interstellar navigation. Could this one day ensure mankind's survival.

Advances in technology have given us unprecedented access to distant galaxies that may harbour life. However, alien life may be found closer to home.

Dan explores the history of the Earls of Arundel, how knights fought in the Hundred Years' War and how the Castle would have prepared for Queen Victoria's 1846 visit.

Hugh and the experts attempt to uncover a lost Roman fort connected to the Antonine Wall, buried beneath the gardens of the quiet streets of Falkirk.

Bible relics are investigated to verify if they provide physical evidence for biblical events and miracles.

Matty goes blackwater river diving in search of the legendary Revolutionary War treasure of British army officer Charles Cornwallis.

Is a dead mermaid really preserved in Japan? And are UFOs attracted to nuclear facilities.

Icons of the Royal Navy in different eras, the Belfast and the Harrier have earned their place in history for different reasons.

Two of the most produced combat machines in World War II managed to stay relevant until the end of the war through constant modernization and new variants.

Revelation is the most terrifying book in the Bible, describing mankind's final days. But who will survive God's wrath? And when will it happen.

In 1994, a secret manuscript hidden in the Vatican revealed a previously unknown apocalyptic prophecy accredited to Nostradamus. Where did it come from.

Do India's Sanskrit texts, with their descriptions of advanced technology, lend themselves to the theory that aliens once walked amongst us.

The Monoliths: Giorgio Tsoukalos takes a closer look at the evidence as he asks whether Earth's stone monoliths were built with extra terrestrial help.

Alien encounters have offered a possible glimpse into the secrets of interstellar navigation. Could this one day ensure mankind's survival.

Advances in technology have given us unprecedented access to distant galaxies that may harbour life. However, alien life may be found closer to home.

Dan explores the history of the Earls of Arundel, how knights fought in the Hundred Years' War and how the Castle would have prepared for Queen Victoria's 1846 visit.

Hugh and the experts attempt to uncover a lost Roman fort connected to the Antonine Wall, buried beneath the gardens of the quiet streets of Falkirk.

One of the US's oldest storage facilities throws up a heap of unusual items, including an 1800s whaling harpoon and a Betsy Ross American flag.

Allen and Ton score a World War II Stuart M3 tank barrel and heavy-duty tank treads. In the ultimate deli unit, they discover a gigantic meat slicer.

Naval battles aren't always the dogfights of popular imagination. Sometimes, the real fight relied on secrets and subterfuge.

Scientists have forever been involved in a quest to understand the universe. But for each answer science provides, more questions arise.

Marty and Matty help investigate a mysterious island where a notorious English pirate is believed to have hidden plundered treasure.

Did a fisherman capture footage of a giant sea serpent? What were the lights that appeared above Texas in 1951.

The Soviet Union produced a large variety of tanks and airplanes during World War II. What made the T34 and the Chaika stand out and become icons.

Found in a scrapyard in 2015, the C-47 aircraft that led the D-Day landings was reconstructed for a transatlantic mission to honour the fallen. This is its incredible story.

Going by ancient cultures' depictions of gods appearing as animals, could it be that extraterrestrials bear more resemblance to animals than humans.

The Tesla Experiment. Giorgio A Tsoukalos draws on evidence from past series as he asks whether Nikola Tesla was communicating with extraterrestrials.

As the world continues to evolve into the digital age, more and more people are capturing images in the sky that they are unable to explain.

For years many have argued that UFOs are as terrestrial as you or I. They may be correct, but not in the way they thought they were.

Dan ventures behind the battlements of Dover Castle, exploring the underground lairs and a vast network of tunnels that have been used to defend the country for centuries.

In Stretton, Hugh and the team search for prehistoric roundhouses and try to work out when people first made the Staffordshire village their home.

Scientists have forever been involved in a quest to understand the universe. But for each answer science provides, more questions arise.

Marty and Matty help investigate a mysterious island where a notorious English pirate is believed to have hidden plundered treasure.

Did a fisherman capture footage of a giant sea serpent? What were the lights that appeared above Texas in 1951.

The Soviet Union produced a large variety of tanks and airplanes during World War II. What made the T34 and the Chaika stand out and become icons.

Found in a scrapyard in 2015, the C-47 aircraft that led the D-Day landings was reconstructed for a transatlantic mission to honour the fallen. This is its incredible story.

These Christian warrior monks reigned supreme for nearly 200 years. What secrets will the city of Tortosa and Jerusalem's Temple Mount reveal about the holy guardians.

The mega-rich love to display their wealth by acquiring flashy vehicles and the ancients were no different, whether it be chariots, horse-drawn carriages or boats.

All wealthy people have the resources to create their ideal home, but these industrial tycoons weren't content with building just one single house.

Going by ancient cultures' depictions of gods appearing as animals, could it be that extraterrestrials bear more resemblance to animals than humans.

The Tesla Experiment. Giorgio A Tsoukalos draws on evidence from past series as he asks whether Nikola Tesla was communicating with extraterrestrials.

As the world continues to evolve into the digital age, more and more people are capturing images in the sky that they are unable to explain.

For years many have argued that UFOs are as terrestrial as you or I. They may be correct, but not in the way they thought they were.

Dan ventures behind the battlements of Dover Castle, exploring the underground lairs and a vast network of tunnels that have been used to defend the country for centuries.

In Stretton, Hugh and the team search for prehistoric roundhouses and try to work out when people first made the Staffordshire village their home.

Allen and Ton uncover an 1886 rifle invented to kill buffalo. Then they head to the monster track to test 1950s electric slot cars.

Allen and Ton come up against Texas's most elite buyers as they discover a military-grade cruise missile jet engine and a Wild West saddle.

The 16th century witnessed a revolution in combat ship design and saw the birth of two legendary sea captains.

For centuries, tales of terrifying monsters have fascinated mankind. Get to know the beasts that have been portrayed in some of history's classic stories.

Matty and Tony re-join the excavation of the Whydah wreckage with Barry and his team in Cape Cod, near a graveyard of sunken cannons.

In this special, Tony Harris reviews the latest developments and most compelling photographic evidence from a tumultuous year of UFO revelations.

Engine problems threaten the restoration, and emotions run high as residents from Greenham Common - where the plane took off from the UK - remember seeing it in its glory.

The restoration is complete and relatives of the original crew share their incredible stories as they board the aircraft. Will it survive a gruelling voyage over the Atlantic.

While many believe in reincarnation, experts suggest that extraterrestrials designed the human body to be a vessel for otherworldly beings.

Alien Power Plants: Giorgio Tsoukalos draws on evidence from past series as he asks whether aliens introduced the Greeks and Egyptians to electricity.

In 1947, there was an unprecedented wave of UFO sightings that propelled the UFO phenomenon to the world stage. What were the US Air Force's findings.

For many people, the most credible UFO reports are those raised by law enforcement. We investigate the most significant reports from police records.

Dan delves into the rich past of the Tower of London, exploring inside the imposing walls that have witnessed some of the most important events in our history.

Hugh Dennis and a team of archaeologists are in Devizes, searching for a revolutionary 19th-century prison with a unique design.

For centuries, tales of terrifying monsters have fascinated mankind. Get to know the beasts that have been portrayed in some of history's classic stories.

Matty and Tony re-join the excavation of the Whydah wreckage with Barry and his team in Cape Cod, near a graveyard of sunken cannons.

In this special, Tony Harris reviews the latest developments and most compelling photographic evidence from a tumultuous year of UFO revelations.

Engine problems threaten the restoration, and emotions run high as residents from Greenham Common - where the plane took off from the UK - remember seeing it in its glory.

The restoration is complete and relatives of the original crew share their incredible stories as they board the aircraft. Will it survive a gruelling voyage over the Atlantic.

Follow the tale of the strongest superhero in Greek mythology and his quest for redemption: a series of impossible challenges to atone for a heinous crime.

Medusa is the most infamous female fiend in Greek mythology - whose look turned every living thing to stone. But what is the true story behind the myth.

While many believe in reincarnation, experts suggest that extraterrestrials designed the human body to be a vessel for otherworldly beings.

Alien Power Plants: Giorgio Tsoukalos draws on evidence from past series as he asks whether aliens introduced the Greeks and Egyptians to electricity.

In 1947, there was an unprecedented wave of UFO sightings that propelled the UFO phenomenon to the world stage. What were the US Air Force's findings.

For many people, the most credible UFO reports are those raised by law enforcement. We investigate the most significant reports from police records.

Dan delves into the rich past of the Tower of London, exploring inside the imposing walls that have witnessed some of the most important events in our history.

Hugh Dennis and a team of archaeologists are in Devizes, searching for a revolutionary 19th-century prison with a unique design.

In the industrial hub of Los Angeles, Ton and Allen unearth a 1981 Bobcat 743 Frontloader and a trench-defending helmet-bashing mace from World War I.

The guys land a 1970s Z-Flex Jimmy Plumer Poolrider skateboard with artwork by Doug Smith and a Kevlar bulletproof vest and helmet used by SWAT teams.

The Battle of Leyte Gulf tells the story of the largest sea conflict in history involving Pearl Harbor warships and the largest battleships in the world.

For centuries there have been legends of vast treasures hidden across the US. Are they just tall tales or are these valuables waiting to be found.

Joined by companion Matty, brothers Rick and Marty Lagina look back on their richest adventures stretching back over the previous year.

What causes the thunderous banging noises that wake Thessaloniki residents every night.

A look at the creation of the super marine Spitfire, an amazing feat of engineering that became one of the most famous fighter aircrafts in the Battle of Britain.

During World War II, British warships were struck by a secret weapon invented by the Italian Navy - the 'human torpedo'. Hear the full story, from disastrous missions to ultimate success.

The Ishi-no-Hoden megalith in Japan was supposedly built to depict an ancient flying ship. Could this have been an ancient alien vessel.

The Mystery of Puma Punku. Experts in the extra-terrestrial examine the Inca ruin and its mysteriously intricate carved blocks.

Between 1981 and 2011, cameras on NASA space shuttles have picked up many images of UFOs that experts still struggle to explain.

While many UFO sightings occur in rural locations with only a single eyewitness, there have been sightings over cities witnessed by hundreds.

Dan explores the turbulent history that took place within the well-preserved walls of Warwick Castle, touching on tales of betrayal, bloodshed, murder and financial woe.

Can Hugh and the team find the remains of a vanished building in the gardens of the Georgian stately home Beningbrough Hall.

For centuries there have been legends of vast treasures hidden across the US. Are they just tall tales or are these valuables waiting to be found.

Joined by companion Matty, brothers Rick and Marty Lagina look back on their richest adventures stretching back over the previous year.

What causes the thunderous banging noises that wake Thessaloniki residents every night.

A look at the creation of the super marine Spitfire, an amazing feat of engineering that became one of the most famous fighter aircrafts in the Battle of Britain.

During World War II, British warships were struck by a secret weapon invented by the Italian Navy - the 'human torpedo'. Hear the full story, from disastrous missions to ultimate success.

Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases.

A massive force of water threatens to destroy everything, from famous paintings to whole cities. The fate of the Sydney Opera House looks bleak.

The Ishi-no-Hoden megalith in Japan was supposedly built to depict an ancient flying ship. Could this have been an ancient alien vessel.

The Mystery of Puma Punku. Experts in the extra-terrestrial examine the Inca ruin and its mysteriously intricate carved blocks.

Between 1981 and 2011, cameras on NASA space shuttles have picked up many images of UFOs that experts still struggle to explain.

While many UFO sightings occur in rural locations with only a single eyewitness, there have been sightings over cities witnessed by hundreds.

Dan explores the turbulent history that took place within the well-preserved walls of Warwick Castle, touching on tales of betrayal, bloodshed, murder and financial woe.

Can Hugh and the team find the remains of a vanished building in the gardens of the Georgian stately home Beningbrough Hall.

Ton and Allen score a knock-out as Hollywood hands them an autographed Raging Bull poster and a rare 1870s knuckle-duster.

The guys strike gold with a 1970s El Toro mechanical bull used to train riders, a silver World War II-era banjo, and a collection of 1800s duck decoys.

Specialized landing craft built to go where no other combat ship can reach and able to deliver tanks, jeeps, soldiers and supplies to the front lines.

Experts investigate why so many UFOs have been spotted near remote islands. Could these far-removed spots be the earthly homes of aliens.

Beyond Nazca: Giorgio Tsoukalos draws on evidence from past series as he takes an in-depth look at the mystery of Southern Peru's Nasca Lines.

Japan expands in Asia and Africa's colonies become key battlegrounds for power and resources.

In 1941, Hitler invaded the USSR. Operation Barbarossa stalls as winter hits and Soviet resistance, fuelled by propaganda, turns the tide.

The Seeds of Violence 1918-1922: In the wake of the First World War, Adolf Hitler identifies Benito Mussolini as his model and has one ultimate goal: to gain power in Germany.

Deceit and Delusion 1923-1928: Hitler appears to be eliminated after his failed putsch in 1923. Discover how the Nazi movement used democracy's tolerance in Germany to come back.

Darkness Falls: Documentary series highlighting what life was really like during the Second World War, featuring the personal stories of soldiers from both sides of the conflict.

Edge Of The Abyss: True stories from WWII. After surviving the Battle of the Bulge, infantryman Rockie Blunt pushes towards the Rhine and the end of the war.

A look at the first weeks of a war that would disrupt the lives of so many, starting with the first shots fired by the Japanese in July 1937, China.

The story of the World War II aircraft carrier USS Enterprise. Join her as she sets sail in the Pacific on a mission to sink enemy submarines.

Amazing CGI graphics tell the story of how the USS Enterprise and sister carriers Yorktown and Hornet turned the tide of the Pacific battle during WWII.

The Seeds of Violence 1918-1922: In the wake of the First World War, Adolf Hitler identifies Benito Mussolini as his model and has one ultimate goal: to gain power in Germany.

Deceit and Delusion 1923-1928: Hitler appears to be eliminated after his failed putsch in 1923. Discover how the Nazi movement used democracy's tolerance in Germany to come back.

We are at War: The German invasion of Poland starts and Jews face segregation. Mussolini allies with Hitler, Churchill is appointed UK PM and Germany invades France.

Revelation is the most terrifying book in the Bible, describing mankind's final days. But who will survive God's wrath? And when will it happen.

What causes the thunderous banging noises that wake Thessaloniki residents every night.

The Mad King of Bavaria: Explore the controversy surrounding the death of the eccentric King Ludwig, whose unstable behaviour saw him deposed.

Experts investigate why so many UFOs have been spotted near remote islands. Could these far-removed spots be the earthly homes of aliens.

Beyond Nazca: Giorgio Tsoukalos draws on evidence from past series as he takes an in-depth look at the mystery of Southern Peru's Nasca Lines.

Peter and Elroy start their archaeological excavation at Runestone Hill and meet Delroy, who takes them to the cemetery where his grandfather is buried.

Get to know the mega-millionaires who hosted parties so lavish and luxurious that they are still being talked about to this day.

When you're one of the richest people to ever live, no price is too high to pay for an object of desire - no matter how expensive or strange it may be.

A look at the first weeks of a war that would disrupt the lives of so many, starting with the first shots fired by the Japanese in July 1937, China.

Garth Barnard fact-finds to determine the cause of a terrible accident in Nebraska in 1944, when a plane crashed during a violent storm.

Edge Of The Abyss: True stories from WWII. After surviving the Battle of the Bulge, infantryman Rockie Blunt pushes towards the Rhine and the end of the war.

Theorists investigate whether sought-after religious relic the Ark of the Covenant could hold connections to our extraterrestrial past.

The Monoliths: Giorgio Tsoukalos takes a closer look at the evidence as he asks whether Earth's stone monoliths were built with extra terrestrial help.

In 1943, Germany fell at Stalingrad, its first major defeat. In the Pacific, Japan lost momentum after the US won at Guadalcanal.

In 1944, D-Day pierces the Atlantic Wall, as Operation Bagration crushes the Wehrmacht in the East. The fall of the Third Reich begins.

Democracy Without Democrats 1929-1933: A protest turns into a racist and anti-Jewish movement during the 1920s and the NSDAP use emotions to gain the loyalty of the people.

The Racial State 1933-1934: President Hindenburg suspends freedom of speech and Hitler comes to power in 1933. The first concentration camps for political opponents are set up.

Hard Way Back: Series highlighting what life was like during WWII. Rookie platoon leader Charles Scheffel suffers his first losses as he battles Rommel's Afrika Korps in Tunisia.

End Game: It is the final push in Europe, but before the Nazis surrender infantryman Rockie Blunt witnesses one of the greatest tragedies of the war: the concentration camps.

Between September 1940 and November 1941, things intensify as Nazi Germany exert their dominance over Europe.

The American Navy is on the offensive and the first strike is on the Solomon Islands. Join the USS Enterprise as it supports the first American invasion.

Follow a battle for survival in a terrible day of vicious WWII combat, when the USS Enterprise lost many of her crew and her sister ship, the USS Hornet.

Democracy Without Democrats 1929-1933: A protest turns into a racist and anti-Jewish movement during the 1920s and the NSDAP use emotions to gain the loyalty of the people.

The Racial State 1933-1934: President Hindenburg suspends freedom of speech and Hitler comes to power in 1933. The first concentration camps for political opponents are set up.

Shall We Go On: Germany builds its empire in Europe, aiming to crush Britain with the Luftwaffe while France is conquered and divided as Churchill rejects peace.

A massive force of water threatens to destroy everything, from famous paintings to whole cities. The fate of the Sydney Opera House looks bleak.

The Costa Del Crime: When a century-old extradition treaty between Britain and Spain ended in 1978, the Spanish Coast became a safe haven for the mafia and criminal masterminds.

The US had to beat the Nazis in the race to create an atomic bomb, so they built many secret nuclear facilities. Here, the controversial sites are re-created.

Theorists investigate whether sought-after religious relic the Ark of the Covenant could hold connections to our extraterrestrial past.

The Monoliths: Giorgio Tsoukalos takes a closer look at the evidence as he asks whether Earth's stone monoliths were built with extra terrestrial help.

The team explore mystery cults and ancient catacombs to determine whether it's possible that the Ark of the Covenant was stolen and hidden in Rome.

Attila and his violent tribe of nomad warriors known as the Huns.

Between September 1940 and November 1941, things intensify as Nazi Germany exert their dominance over Europe.

Controversial royal Prince George perished in a plane crash in 1942. Was a pilot error or sabotage to blame.

End Game: It is the final push in Europe, but before the Nazis surrender infantryman Rockie Blunt witnesses one of the greatest tragedies of the war: the concentration camps.

Learn about the mysterious triangles - in Bermuda, Alaska, Japan and elsewhere - where ships, planes and people enter and disappear.

New theories shed light on the world's biggest mysteries, including the unsolved disappearances of aviator Amelia Earhart and hijacker DB Cooper.

Photos from 1951 suggest that a woman spontaneously combusted, while a brain-numbing noise plagues Brooklyn.

Part One: Hear about the personal rivalry between Winston Churchill and Adolf Hitler, exploring how their exploits in World War I shaped their future commands.

Part Two: Through archive footage, see how these radically different characters clashed in a fascinating subplot of World War II.

Hundreds of seemingly alien discs are found in China, only to be taken by the Chinese government and dismissed as a hoax. Is there more to the story.

Alien Messages: Could some of our ancient texts and structures be home to secret messages left by alien ancestors? If so, what can we learn from them.

The New Frontier: With science closer than ever to proving that life once lived on Mars, is there a chance that something still exists there.

With light from distant stars taking millions of years to reach us, how long might it take for alien life to answer any communication sent into space.

Dan is in the heart of Snowdonia exploring a Caernarfon Castle - built not only as an impenetrable fortress but also as a lavish royal palace fit for a fairy tale.

Hugh and the team search for the remains of a Norman motte and bailey castle in the suburb of West Derby and uncover gems in the residents' gardens.

Learn about the mysterious triangles - in Bermuda, Alaska, Japan and elsewhere - where ships, planes and people enter and disappear.

New theories shed light on the world's biggest mysteries, including the unsolved disappearances of aviator Amelia Earhart and hijacker DB Cooper.

Photos from 1951 suggest that a woman spontaneously combusted, while a brain-numbing noise plagues Brooklyn.

Part One: Hear about the personal rivalry between Winston Churchill and Adolf Hitler, exploring how their exploits in World War I shaped their future commands.

Part Two: Through archive footage, see how these radically different characters clashed in a fascinating subplot of World War II.

After four years of horror on the battlefield, the Allies are in danger of losing to Germany. General John J Pershing races to train the untested American Army.

Hundreds of seemingly alien discs are found in China, only to be taken by the Chinese government and dismissed as a hoax. Is there more to the story.

Alien Messages: Could some of our ancient texts and structures be home to secret messages left by alien ancestors? If so, what can we learn from them.

With light from distant stars taking millions of years to reach us, how long might it take for alien life to answer any communication sent into space.

The New Frontier: With science closer than ever to proving that life once lived on Mars, is there a chance that something still exists there.

Dan is in the heart of Snowdonia exploring a Caernarfon Castle - built not only as an impenetrable fortress but also as a lavish royal palace fit for a fairy tale.

Hugh and the team search for the remains of a Norman motte and bailey castle in the suburb of West Derby and uncover gems in the residents' gardens.

The New Frontier: With science closer than ever to proving that life once lived on Mars, is there a chance that something still exists there.

Allen and Ton uncover a 1953 Chevy-inspired bumper car, a stash of M16 30-round magazines, and a set of homemade spud gun potato launchers.

The guys gamble on big units in Vegas, where they win a 1974 death-defying Zig Zag magic sword box and a rare 1910 poster of magician Chung Ling Soo.

Dive into the 'game changing' ships that turned the tide of war and made history, from the grand USS Constitution to the small and speedy CMB-4.

The Founding Fathers established the pillars of freedom and democracy in the US, but what truths have remained in the shadows about these men.

What's going on in Area 51? What crashed at Roswell? And what's happening at the top-secret Dugway Proving Ground? Experts go in search of answers.

Ony investigates anomalies including UFO footage from Sweden and a bizarre case of decapitated goats in Atlanta.

On the orders of Adolf Hitler, the Nazi invaders of Alderney utilised more than 5,000 slave labourers to build a series of protective fortifications.

The World War II killings carried out by the Nazis on Alderney represent the worst mass murder in British history - yet no one has been brought to justice.

Experts examine the megalithic complex of Gobekli Tepe, and ask if such an advanced structure could possibly have been built by humans alone.

Aliens And The Lost Ark: Experts on the extraterrestrial investigate the possibility of the religious relic being an alien artefact.

Is biological life merely a stepping stone for a universe dominated by alien artificial intelligence.

As humanity continues to search for alien life, experts give their analysis on how close we are to First Contact.

Stirling has long been one of the most strategically important castles in Britain. Dan Jones examines the rich and savage history of this stronghold.

Hugh and the team uncover a World War Two prisoner of war camp beneath a housing estate in Oldham. Glen Mill held over six thousand enemy prisoners.

The Founding Fathers established the pillars of freedom and democracy in the US, but what truths have remained in the shadows about these men.

What's going on in Area 51? What crashed at Roswell? And what's happening at the top-secret Dugway Proving Ground? Experts go in search of answers.

Ony investigates anomalies including UFO footage from Sweden and a bizarre case of decapitated goats in Atlanta.

On the orders of Adolf Hitler, the Nazi invaders of Alderney utilised more than 5,000 slave labourers to build a series of protective fortifications.

The World War II killings carried out by the Nazis on Alderney represent the worst mass murder in British history - yet no one has been brought to justice.

After Germany tries an all-out push to take Paris, America is forced to make hard decisions that will either break the Allies or turn the tide of war.

Experts examine the megalithic complex of Gobekli Tepe, and ask if such an advanced structure could possibly have been built by humans alone.

Aliens And The Lost Ark: Experts on the extraterrestrial investigate the possibility of the religious relic being an alien artefact.

Is biological life merely a stepping stone for a universe dominated by alien artificial intelligence.

As humanity continues to search for alien life, experts give their analysis on how close we are to First Contact.

Stirling has long been one of the most strategically important castles in Britain. Dan Jones examines the rich and savage history of this stronghold.

Hugh and the team uncover a World War Two prisoner of war camp beneath a housing estate in Oldham. Glen Mill held over six thousand enemy prisoners.

Is biological life merely a stepping stone for a universe dominated by alien artificial intelligence.

Allen and Ton find a signed Bob Shaw Swing-Gate tattoo machine in LA, as well as a competition chainsaw and a remarkable wooden bear.

Ton and Allen prove the early bird does catch the worm when a morning auction offers up a mixed martial arts fighting cage and a vintage carnival game.

It was a battle that lasted only five hours, but Britain's fight against Spain and Napoleon Bonaparte's France would go down in history.

The American frontier is full of legends of cowboys, Native Americans, and outlaws. But what about the tales of cursed mountains, monsters and even UFOs.

Experts investigate the US government's experiments into teleportation. They also dig into strange happenings at Mount Shasta and Skinwalker ranch.

Did a canoer film the legendary Skunk Ape walking in gator-infested waters.

In the early hours of 6 June 1944, Allied forces began the greatest military assault ever attempted. Here, the story of the liberation of Europe is revealed.

Allen and Ton take on an old foe at a container auction to get their hands on a mint 1800s pistol and a collection of 90s remote-controlled combat robots.

Researchers claim hidden messages can be found within the works of Leonardo da Vinci that may reveal an extraterrestrial influence.

Aliens And The Creation Of Man: Can unexplained advances in human evolution be attributed to alien architects? Alien theorists look at the evidence.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Dan visits one of Northern Ireland's oldest castles, Carrickfergus, to learn more about the tempestuous relationship between Britain and Ireland.

Hugh and the team solve a 17th-century mystery in King's Lynn as they hunt for defensive earthworks from the English Civil War.

The American frontier is full of legends of cowboys, Native Americans, and outlaws. But what about the tales of cursed mountains, monsters and even UFOs.

Experts investigate the US government's experiments into teleportation. They also dig into strange happenings at Mount Shasta and Skinwalker ranch.

Did a canoer film the legendary Skunk Ape walking in gator-infested waters.

In the early hours of 6 June 1944, Allied forces began the greatest military assault ever attempted. Here, the story of the liberation of Europe is revealed.

The New Frontier: With science closer than ever to proving that life once lived on Mars, is there a chance that something still exists there.

The US had to beat the Nazis in the race to create an atomic bomb, so they built many secret nuclear facilities. Here, the controversial sites are re-created.

Roman emperor Titus plans 100 days of games to commemorate the Colosseum's completion in 80 AD, including a fight to the death between Priscus and Verus.

Researchers claim hidden messages can be found within the works of Leonardo da Vinci that may reveal an extraterrestrial influence.

Aliens And The Creation Of Man: Can unexplained advances in human evolution be attributed to alien architects? Alien theorists look at the evidence.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Dan visits one of Northern Ireland's oldest castles, Carrickfergus, to learn more about the tempestuous relationship between Britain and Ireland.

Hugh and the team solve a 17th-century mystery in King's Lynn as they hunt for defensive earthworks from the English Civil War.

Allen and Ton take on an old foe at a container auction to get their hands on a mint 1800s pistol and a collection of 90s remote-controlled combat robots.

A desert auction in Palm Springs gives the guys a 70s sandrail dune racer and a 1965 replica Mustang pool table. But how much can they flog them for.

Taking place 110 miles behind enemy lines in a treacherous harbour, the Korean War's Battle of Incheon was one of the riskiest assaults in history.

Today, we tend to think that our scientific knowledge can help protect us from almost anything, including natural disasters. But is that really true.

Three places, three spooky stories. Experts examine weird sightings and unsolved disappearances at Bennington, Bermuda and Bridgewater triangles.

Did a filmmaker capture a mammoth crossing a Siberian river? Tony Harris examines clues to determine its validity.

The Battle of the Beaches: Retrace the 100 days of battle as the Allies liberated Normandy, broke through the German line and paved the way towards victory.

The Normandy Campaign: Retrace the 100 days of battle as the Allies liberated Normandy, broke through the German line and paved the way towards victory.

In 2017, a strange, cigar-shaped object enters the solar system, causing some astronomers to suggest that it could be an extraterrestrial craft.

Theorists speculate about the existence of black holes on Earth, which may explain strange disappearances and other inexplicable phenomena.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Part One: Uncover the turmoil of 12th-century Ireland, where Kings vie for supremacy and powerful people drive a rival into exile - who then seeks help from Henry II.

Hugh and the team go on the hunt for the Morda Workhouse in Oswestry, to find out what the conditions were really like for those who lived there.

Today, we tend to think that our scientific knowledge can help protect us from almost anything, including natural disasters. But is that really true.

Three places, three spooky stories. Experts examine weird sightings and unsolved disappearances at Bennington, Bermuda and Bridgewater triangles.

Did a filmmaker capture a mammoth crossing a Siberian river? Tony Harris examines clues to determine its validity.

The Battle of the Beaches: Retrace the 100 days of battle as the Allies liberated Normandy, broke through the German line and paved the way towards victory.

The Normandy Campaign: Retrace the 100 days of battle as the Allies liberated Normandy, broke through the German line and paved the way towards victory.

A half-bull, half-man, the Minotaur is one of mythology's terrifying monsters. It's a bizarre tale of bestiality and human sacrifice - but what is the real-life origin.

His epic battles with Grendel and his mother have made Beowulf the Viking world's most famous warrior. But could this mythological hero have been based on a real person.

In 2017, a strange, cigar-shaped object enters the solar system, causing some astronomers to suggest that it could be an extraterrestrial craft.

Theorists speculate about the existence of black holes on Earth, which may explain strange disappearances and other inexplicable phenomena.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Part One: Uncover the turmoil of 12th-century Ireland, where Kings vie for supremacy and powerful people drive a rival into exile - who then seeks help from Henry II.

Hugh and the team go on the hunt for the Morda Workhouse in Oswestry, to find out what the conditions were really like for those who lived there.

The guys stumble on a laser tag system used for military training and an angler's fighting chair from the 70s. But the latter is in dire need of a refurb.

In San Diego, the guys get thrown a 50s pitching machine. They also rescue a Jaws of Life tool from the 80s.

Follow the major operations that have taken place in the Persian Gulf - from Earnest Will to Desert Storm - and examine the combat vessels from both sides.

All over the world, there are giant monoliths that our ancient ancestors carved out of solid rock. But what was the purpose of these huge stone monuments.

What did UFO chaser Captain Mantell see before he was killed? Plus, experts investigate a close encounter in Texas and a mysterious crash at Shag Harbour.

Did an Italian reconnaissance pilot capture genuine UFO photos in 1979.

During WWII, soldiers from the British Empire, Belgium and France tried to evacuate from the town of Dunkirk during a arduous battle with German forces. This film explores the story.

Marking the 75th anniversary of D-Day, a special documentary explores the world-changing event through the incredible images and recollections of veteran photographers.

Researchers study giant ancient drawings found etched into the desert floor, which may be a part of an ancient alien code.

Could Area 51's notoriety act as a cover up to much bigger, top-secret extraterrestrial experiments taking place at multiple locations.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Part Two: Follow the course of the invasion as Strongbow wins victory after victory, while Henry II arrives to take control of Ireland and grants land to settlers from Britain.

Hugh and the team search for a monastic grange known as Biggin Hall, which provided produce for the nearby monks at St Mary's Priory.

All over the world, there are giant monoliths that our ancient ancestors carved out of solid rock. But what was the purpose of these huge stone monuments.

What did UFO chaser Captain Mantell see before he was killed? Plus, experts investigate a close encounter in Texas and a mysterious crash at Shag Harbour.

Did an Italian reconnaissance pilot capture genuine UFO photos in 1979.

During WWII, soldiers from the British Empire, Belgium and France tried to evacuate from the town of Dunkirk during a arduous battle with German forces. This film explores the story.

Marking the 75th anniversary of D-Day, a special documentary explores the world-changing event through the incredible images and recollections of veteran photographers.

Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases.

The things that once represented our favourite times of year meet their demise, from Christmas trees and roller coasters, to high-end resorts and cruise ships.