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Built in 537, this is a walk-through the stunning place of worship located in Istanbul, Turkey.

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

Troy rushes to Florida to find a Nile crocodile, one of the world's deadliest animals - and recruits expert gator wranglers to capture the beast.

Investigate alien-like metal monsters coming from the sea, a war between 30 million crabs and an army of killer ants, and the white wall of death from which there is no escape.

Soviet troops withdraw from Afghanistan in 1989 after fighting a force funded by the US. Should the US be blamed for the rise of Islamic terrorism.

The story of one of the world's most effective war machines: The Viking longship. They were elegant, versatile and feared.

For decades, claims of extraterrestrial presence on Earth have been made - and the government have gone to great lengths to discredit them.

For thousands of years, humankind has attempted to make contact with extraterrestrial beings from beyond Earth.

60 years on, Tony's close encounter has become an obsession. Meanwhile, pilot David presents photographic evidence of the UFO he almost crashed into whilst flying near area 51.

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

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

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

Troy rushes to Florida to find a Nile crocodile, one of the world's deadliest animals - and recruits expert gator wranglers to capture the beast.

Investigate alien-like metal monsters coming from the sea, a war between 30 million crabs and an army of killer ants, and the white wall of death from which there is no escape.

Soviet troops withdraw from Afghanistan in 1989 after fighting a force funded by the US. Should the US be blamed for the rise of Islamic terrorism.

The story of one of the world's most effective war machines: The Viking longship. They were elegant, versatile and feared.

Explore how the Axis Powers' ruthless, brutal occupation and exploitation of other countries contributed to their demise.

Exploring the impact of the Battle of Hastings in 1066, Karl and Kevin continue their look at how weapons and body armour developed.

For decades, claims of extraterrestrial presence on Earth have been made - and the government have gone to great lengths to discredit them.