A team of field investigators uncover the clues that will recreate vanished or hidden worlds. They use the latest research, expert analysis and cutting-edge graphics technology to take us back.

Giant triangles allegedly capable of incredible acceleration and speed have been seen all over the world - what are these objects and what is their purpose?

A bloody battle at the ancient city of Dos Pilas leads to the downfall and disappearance of this powerful pre-Columbian warrior society.

Discover the cataclysmic events that forged our planet. Experts reveal the remarkable story of how the Great Lakes were formed.

The Civil War nearly destroyed the great experiment known as the United States of America, but is it possible that the preservation of the republic was influenced by extraterrestrial beings?

Join host Don Wildman as he discovers the massive CuChi tunnel system that gave soldiers the upper hand to the super-bunkers and secret caves used as shelters.

In 1944, the south-west of England was packed with American troops training for D-Day. Suggs and Stephen discover more about this friendly invasion.

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.

A team of field investigators uncover the clues that will recreate vanished or hidden worlds. They use the latest research, expert analysis and cutting-edge graphics technology to take us back.

Giant triangles allegedly capable of incredible acceleration and speed have been seen all over the world - what are these objects and what is their purpose?

A bloody battle at the ancient city of Dos Pilas leads to the downfall and disappearance of this powerful pre-Columbian warrior society.

Discover the cataclysmic events that forged our planet. Experts reveal the remarkable story of how the Great Lakes were formed.

The Civil War nearly destroyed the great experiment known as the United States of America, but is it possible that the preservation of the republic was influenced by extraterrestrial beings?

Join host Don Wildman as he discovers the massive CuChi tunnel system that gave soldiers the upper hand to the super-bunkers and secret caves used as shelters.

In 1944, the south-west of England was packed with American troops training for D-Day. Suggs and Stephen discover more about this friendly invasion.

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.

A team of field investigators uncover the clues that will recreate vanished or hidden worlds. They use the latest research, expert analysis and cutting-edge graphics technology to take us back.

Giant triangles allegedly capable of incredible acceleration and speed have been seen all over the world - what are these objects and what is their purpose?

A bloody battle at the ancient city of Dos Pilas leads to the downfall and disappearance of this powerful pre-Columbian warrior society.

Discover the cataclysmic events that forged our planet. Experts reveal the remarkable story of how the Great Lakes were formed.

The Civil War nearly destroyed the great experiment known as the United States of America, but is it possible that the preservation of the republic was influenced by extraterrestrial beings?

Join host Don Wildman as he discovers the massive CuChi tunnel system that gave soldiers the upper hand to the super-bunkers and secret caves used as shelters.

In 1944, the south-west of England was packed with American troops training for D-Day. Suggs and Stephen discover more about this friendly invasion.

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.

On 6 March 1987, the ferry Herald of Free Enterprise capsized, resulting in the deaths of 193 passengers and crew.

In less than 200 years, the Aztecs went from a tribe of nomads into the most powerful civilisation the New World had ever known. How did they achieve such greatness?

Brothers Jim and Bill Vieira discover a previously unknown hidden chamber where they believe a giant skeleton may be buried.

Discover how cornered Egyptian soldiers miraculously escaped the Hittites in one of the greatest armed battles of the ancient world.

Chasing accounts of giant skeleton discoveries, Jim and Bill Vieira follow in the footsteps of Abraham Lincoln, who was fascinated by tales and legends of ancient colossi.

In 47 AD, new emperor Claudius was considered by many to be an idiot. The only way for him to hang onto his throne was to invade Britannia.

Documentary series taking a fresh look at the world's ancient mysteries. Giants of Easter Island.

The team unearths evidence of a secret tunnel while new clues suggest a deeper mystery than just the missing Confederate gold.

On 6 March 1987, the ferry Herald of Free Enterprise capsized, resulting in the deaths of 193 passengers and crew.