Hitler's Museum of Stolen Art: In 2012, the search of a recluse's Munich flat uncovers lost art linked to his father, a man known as Hitler's art dealer.

High-ranking military officials drop a bombshell when the team travel to Europe on a quest to probe a UFO case.

In the heart of the Mediterranean, a peaceful island explodes with devastating force - it will be the biggest volcanic eruption in three and a half thousand years of recorded history.

A look at how forces from space might have changed the course of life on Earth, including the asteroid many believe caused the fall of Rome.

Ancient Astronaut theorists believe the global practice of mummification is not a coincidence, but proof that highly advanced extraterrestrials visited Earth in the distant past.

"Engineering Disasters" goes beyond the headlines to uncover what really happened in the most notorious engineering accidents.

The story of a spacecraft crashing in Roswell, New Mexico, is the most famous case in UFO history. Now, a theory has emerged that there was more than one crash site.

An exploration of the shapes and patterns seen when observing planets and galaxies, and how the form of the universe itself was created.

Hitler's Museum of Stolen Art: In 2012, the search of a recluse's Munich flat uncovers lost art linked to his father, a man known as Hitler's art dealer.

High-ranking military officials drop a bombshell when the team travel to Europe on a quest to probe a UFO case.

In the heart of the Mediterranean, a peaceful island explodes with devastating force - it will be the biggest volcanic eruption in three and a half thousand years of recorded history.

A look at how forces from space might have changed the course of life on Earth, including the asteroid many believe caused the fall of Rome.

Ancient Astronaut theorists believe the global practice of mummification is not a coincidence, but proof that highly advanced extraterrestrials visited Earth in the distant past.

"Engineering Disasters" goes beyond the headlines to uncover what really happened in the most notorious engineering accidents.

The story of a spacecraft crashing in Roswell, New Mexico, is the most famous case in UFO history. Now, a theory has emerged that there was more than one crash site.

An exploration of the shapes and patterns seen when observing planets and galaxies, and how the form of the universe itself was created.

Hitler's Museum of Stolen Art: In 2012, the search of a recluse's Munich flat uncovers lost art linked to his father, a man known as Hitler's art dealer.

High-ranking military officials drop a bombshell when the team travel to Europe on a quest to probe a UFO case.

In the heart of the Mediterranean, a peaceful island explodes with devastating force - it will be the biggest volcanic eruption in three and a half thousand years of recorded history.

A look at how forces from space might have changed the course of life on Earth, including the asteroid many believe caused the fall of Rome.

Ancient Astronaut theorists believe the global practice of mummification is not a coincidence, but proof that highly advanced extraterrestrials visited Earth in the distant past.

"Engineering Disasters" goes beyond the headlines to uncover what really happened in the most notorious engineering accidents.

The story of a spacecraft crashing in Roswell, New Mexico, is the most famous case in UFO history. Now, a theory has emerged that there was more than one crash site.

An exploration of the shapes and patterns seen when observing planets and galaxies, and how the form of the universe itself was created.

Vast statues, towering obelisks and incredible temples formed the legacy left by the greatest Egyptian Emperor. Cutting-edge graphics recreate this golden empire.

Everything we know about UFOs has changed. The all-star team return to explore new developments and investigations.

An epic journey to the places that heard the word of St Paul and inspired the birth of Christianity.

A turbulent and violent geological past has led to the formation of this unique and beautiful waterway. The secrets and mysteries of Scotland's most famous loch are revealed.

Could extraterrestrials have left us clues to the universe's mysteries? Experts investigate cryptic puzzles that might have been left by ancient aliens.

Documentary series that reconstructs life on other planets and galaxies, fantasizes about life and all its possible forms in other atmospheres and parallel universe.

Discover the myth of ancient Greece's most feared god. Hades takes us behind the veil of the ancient Greek belief in life after death with chilling tales.

We reveal the mysteries of an area which has swallowed an untold number of ships, planes and lives.

Vast statues, towering obelisks and incredible temples formed the legacy left by the greatest Egyptian Emperor. Cutting-edge graphics recreate this golden empire.