Don goes deep beneath a Knights Templar stronghold in Turkey to explore a provocative theory that may link the fabled secret society to the founding fathers of America.

Don explores newly-discovered ruins and caves in Croatia as he uncovers the true story of a formidable queen who dared to defy the powerful Roman Empire.

Dec 1944: with Europe in the grip of a terrible winter, Hitler's Panzers spearhead an attack on the Allied frontline in the Ardennes. They are to break through and re-capture the Port of Antwerp.

We visit Italy to investigate Benito Mussolini, the brutal dictator whose violent path to power set the template for the rise of Nazi Germany.

How did Cleopatra die? Where is her tomb located? To get closer to the answers, one must understand ancient Egyptian funerary rites. Leading experts help us decipher the traditions of Cleopatra's era.

Jun-Jul 1944: Three weeks after D-Day, the Allied advance has stalled. The killing fields around Hill 112 become the start of a brutal war of attrition that the Nazis cannot afford to wage.

Neuschwanstein is Louis II of Bavaria's 19th-century fairy-tale castle that inspired Walt Disney. Inside, medieval fantasy hides modern innovation: steel beams, plumbing, and central heating.

Japanese troops occupy southern Vietnam and Cambodia, but the day that changes the war comes on December 7th when Japanese aircraft attack the American Pacific Fleet at anchor in Pearl Harbor.

From the super-dreadnought battleships of the First World War to the stealth submarines of the Cold War, maritime vessels have proved decisive in the fight for naval supremacy.

We discover how Hitler's master spy Wilhelm Canaris was both a committed Nazi and a double agent who provided secrets to the Allies and helped Jews escape from Germany.

Don explores the massive underground cities in the mountains of Turkey that may have been home to the first civilisation on Earth.

Don follows the clues hidden underground as he searches for evidence of 10,000 Aztecs who fled Mexico and disappeared somewhere in America.

Don goes deep beneath a Knights Templar stronghold in Turkey to explore a provocative theory that may link the fabled secret society to the founding fathers of America.

Don explores newly-discovered ruins and caves in Croatia as he uncovers the true story of a formidable queen who dared to defy the powerful Roman Empire.

Japan's escalation of the War in the East is devastatingly effective; despite their success, it is possible to see their inevitable defeat as they have roused the military might of the USA.

Weapons win wars; it's been claimed that the human race has spent more time, money, and effort in developing weapons than in any other single field of human endeavour.

The Devil's Bible has long intrigued experts; who wrote it? In search of the truth, we visit a castle said to house a gate to Hell, huge rock-carved demons, and the palaces of heretical monarchs.

The world is fascinated by the Pyramids of Giza; we explore theories and recent advances in archaeology, Egyptology and astrophysics to decipher the clues left behind by the ancient Egyptians.

Dec 1944: with Europe in the grip of a terrible winter, Hitler's Panzers spearhead an attack on the Allied frontline in the Ardennes. They are to break through and re-capture the Port of Antwerp.

Begun in 1882, the Sagrada Família became Gaudí's radical engineering laboratory. In 2026, the church yet to be finished, builders use modern engineering to raise the 170-metre spires above Barcelona.

We visit Italy to investigate Benito Mussolini, the brutal dictator whose violent path to power set the template for the rise of Nazi Germany.

War explodes across western Europe; the Germans' mobile armour, airborne troops and airpower on the battlefield makes their assault unstoppable, and France is ready to fall to the Nazis.

Germany seeks to neutralise British strength from the air in the Battle of Britain; the Luftwaffe has been deterred, but the Blitz begins as the Germans move to support their allies in North Africa.