Sky History 2 Thursday

The significance of the mysterious symbol of the keyhole found in mystic texts, sacred architecture and ancient artwork all over the planet

Massive megalithic structures and reported discoveries of towering human-like skeletons, contemplating whether they reveal that the world was once inhabited by giants

Great mysteries that were once frozen in time, here focusing on secrets now revealed of prehistoric warfare

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

The secrets behind the San Bernardo mummies, a trip to the fascinating Skatopia in Ohio and a close look at typical living conditions in Siberia

The significance of the mysterious symbol of the keyhole found in mystic texts, sacred architecture and ancient artwork all over the planet

Massive megalithic structures and reported discoveries of towering human-like skeletons, contemplating whether they reveal that the world was once inhabited by giants

The origins of the curses surrounding the Karun Treasure, Edvard Munch's The Sick Child paintings and other subjects, from a hidden tomb in Turkey to a death bed in Norway

Madness frontman Suggs and militaria expert Stephen Taylor visit Little Staughton in Cambridgeshire, the location of a former Pathfinders Force airbase

The Ottoman Empire, which controlled much of south-east Europe, Western Asia and North Africa between the 14th and early 20th centuries

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

Troy Landry gets a call from a local rancher with a huge problem. Feral hogs are tearing his property apart, and no matter what he does, he can't get rid of them

A visit to the Devil's Pool in Zambia and an exploration of the electrifying Tesla Tower in Moscow's abandoned woods. Plus, a tour of the safest airport in the world

The possibility of the existence of portals through space, which would allow people to travel vast distances in the blink of an eye

The possibility of alien civilisations visiting Earth's solar system, including tales of derelict spaceships

In Nazi Germany, questions about witchcraft attracted SS leaders. Himmler, dedicated to an Aryan super race, established a team to research witchcraft

The 1927 murder of Albert Snyder by his wife, Ruth Brown Snyder, and her lover, corset salesman Henry Judd Gray

Great mysteries that were once frozen in time, here focusing on secrets now revealed of prehistoric warfare

Ignatius refuses to pledge his allegiance to the emperor and is forced to travel from Antioch to Rome, where awaits his final punishment at The Colosseum. Anthony Barclay stars

The significance of the mysterious symbol of the keyhole found in mystic texts, sacred architecture and ancient artwork all over the planet

Massive megalithic structures and reported discoveries of towering human-like skeletons, contemplating whether they reveal that the world was once inhabited by giants

Madness frontman Suggs and militaria expert Stephen Taylor visit Little Staughton in Cambridgeshire, the location of a former Pathfinders Force airbase

The Roman Empire was the most powerful economic, cultural, political and military force in the world of its time. This programme explores the sites that defined its dominance

The possibility of the existence of portals through space, which would allow people to travel vast distances in the blink of an eye

The possibility of alien civilisations visiting Earth's solar system, including tales of derelict spaceships

Troy Landry gets a call from a local rancher with a huge problem. Feral hogs are tearing his property apart, and no matter what he does, he can't get rid of them

The suggestion that that advanced - and perhaps even extraterrestrial - civilisations existed on Earth thousands of years before the present one