Sky History 2 HD Tuesday

The secrets of the Founding Fathers, who established the pillars of freedom and democracy in the United States more than two centuries ago

Experts once gain confront issues that harbour lingering doubts, such as Area 51, Roswell and Dugway Proving Ground

A photograph taken by a teenager said to offer some of the most convincing UFO evidence ever. Plus, a video posted online showing a pterodactyl-like creature flying over Idaho

Part one of two. How the Channel Island of Alderney became a pre-occupation of Nazi leader Adolf Hitler and was transformed into one of the most heavily fortified places on Earth

Part two of two. On the orders of Hitler, more than 5,000 slave labourers were shipped to Alderney to build a series of fortifications designed to protect the island from attack

The ancient site of Gobekli Tepe, which hallenges what archaeologists believe about the past

An investigation into the Ark of the Covenant, one of the most sought after religious relics of all time with powers that may suggest a link to an extraterrestrial past

Giorgio Tsoukalos from Ancient Aliens investigates whether extra-terrestrial beings lie at the heart of some of Earth's most famous mysteries

Giorgio Tsoukalos from Ancient Aliens investigates whether extra-terrestrial beings lie at the heart of some of Earth's most famous mysteries

Dan Jones explores the history of Stirling Castle, which has long been one of the most strategically important castles in Britain and guards the gateway to the Highlands

The team unearths a Victorian mill that was converted into a prisoner of war camp during the Second World War, which is located under a housing estate in Oldham, Greater Manchester

The secrets of the Founding Fathers, who established the pillars of freedom and democracy in the United States more than two centuries ago

Experts once gain confront issues that harbour lingering doubts, such as Area 51, Roswell and Dugway Proving Ground

A photograph taken by a teenager said to offer some of the most convincing UFO evidence ever. Plus, a video posted online showing a pterodactyl-like creature flying over Idaho

Part one of two. How the Channel Island of Alderney became a pre-occupation of Nazi leader Adolf Hitler and was transformed into one of the most heavily fortified places on Earth

Part two of two. On the orders of Hitler, more than 5,000 slave labourers were shipped to Alderney to build a series of fortifications designed to protect the island from attack

After Germany tried an all-out push to take Paris, America was forced to make hard decisions that would either break the Allies or turn the tide of the conflict

The ancient site of Gobekli Tepe, which hallenges what archaeologists believe about the past

An investigation into the Ark of the Covenant, one of the most sought after religious relics of all time with powers that may suggest a link to an extraterrestrial past

Giorgio Tsoukalos from Ancient Aliens investigates whether extra-terrestrial beings lie at the heart of some of Earth's most famous mysteries

Giorgio Tsoukalos from Ancient Aliens investigates whether extra-terrestrial beings lie at the heart of some of Earth's most famous mysteries

Dan Jones explores the history of Stirling Castle, which has long been one of the most strategically important castles in Britain and guards the gateway to the Highlands

The team unearths a Victorian mill that was converted into a prisoner of war camp during the Second World War, which is located under a housing estate in Oldham, Greater Manchester

Giorgio Tsoukalos from Ancient Aliens investigates whether extra-terrestrial beings lie at the heart of some of Earth's most famous mysteries

Allen Haff and Ton Jones attend an auction in Los Angeles, where they acquire an autographed 1960s tattoo machine, a competition chainsaw and a cedar bear

Allen Haff and Ton Jones buy a fighting cage and a vintage carnival game in California

The Battle of Trafalgar, a naval engagement contested in October 1805 between the British Royal Navy and the combined fleets of the French and Spanish Navies