Sky History 2 HD Saturday

Experts investigate remote ruins, mysterious caves and legendary mountain portals, asking if these alleged stargates have brought ancient aliens to Earth

Experts examine the belief that gifted children with strange abilities and great knowledge may have been born from ancient aliens

Veterans and historians tell the story of the Thai-Burma railway and the countless prisoners of war and slave labourers who died building it

The story of the Great Locomotive Chase - an attempt by northern spies to steal steam locomotive The General during the American Civil War

From the trench to the home-front hospital, a medical historian retraces the train journey made by wounded soldiers during the Second World War

Documentary going behind the scenes at the castle and exploring its history. The first episode focuses on the Beefeaters and reveals the origins of the tower

The latest recruit to join the team of 37 beefeaters begins his career with some testing exams, while the chief curator reveals the history of Anne Boleyn within the walls

The presenter is joined by Bruno Tonioli to look at key battle tactics during the Roman Invasion - such as the complexity of firing a catapult

Experts investigate remote ruins, mysterious caves and legendary mountain portals, asking if these alleged stargates have brought ancient aliens to Earth

Experts examine the belief that gifted children with strange abilities and great knowledge may have been born from ancient aliens

The story of Britain's first female agents sent to the front line during the Second World War and spymistress Vera Atkins, who led them

How, as Hitler rose to power in Nazi Germany, Heinrich Himmler and the SS resolved to find the legendary continent Atlantis

The efforts of Norwegian resistance fighters to return to their invaded homeland to carry out a daring mission to raid and destroy a hydroelectric plant

A look at the legend of Thor, asking historians whether they believe in the Norse protector god following new discoveries

Exploring the story of Beowulf, the Anglo-Saxon world's most famous warrior, questioning whether the mythological hero could have been based on a real person

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

Extraordinary footage, colourised for the first time, shows life and death on the battlefield of El Alamein and behind the lines in the north African desert

Experts investigate remote ruins, mysterious caves and legendary mountain portals, asking if these alleged stargates have brought ancient aliens to Earth

Experts examine the belief that gifted children with strange abilities and great knowledge may have been born from ancient aliens