The team uses drones to explore one of the world's largest ancient water systems, and ancient weapons and traces of a colossal iron industry reveal the truth behind the power of the Khmer military.

This documentary is a rediscovery of Nineveh, capital of one of the greatest civilisations - the world's first genuine superpower, the Assyrians. Why did this great city disappear?

What secrets did the Nazis hope to find inside the cells and DNA of the human body? Some of the most nauseating Nazi experiments were performed in the name of creating a pure Aryan race.

Reinhard Heydrich, the ruthless figurehead behind the Holocaust's planning, wielded power through deadly efficiency. His assassination was a dramatic blow to the Nazi elite.

For more than 3,000 years, the Maya civilisation flourished in Mesoamerica, developing cities, a sophisticated writing system, and an advanced understanding of time, astronomy, and the natural world.

What secrets did the Nazis hope to find inside the cells and DNA of the human body? Some of the most nauseating Nazi experiments were performed in the name of creating a pure Aryan race.

In 1798, Napoleon invaded Egypt with soldiers and scholars. As Denon risked his life recording ancient wonders, the Rosetta Stone promised to unlock the mystery of hieroglyphs.

In the aftermath of the Great War, the victors sign the Treaty of Versailles. We begin this series by exploring the 20 years after World War One and the events that led to the birth of World War Two.

By the end of WWII, the tank had evolved from its trench-crossing beginnings; it had turned into a vision of armoured warfare that carried on through the Cold War and into the present day.

Reinhard Heydrich, the ruthless figurehead behind the Holocaust's planning, wielded power through deadly efficiency. His assassination was a dramatic blow to the Nazi elite.

Historians and archaeologists set off in the footsteps of Genghis Khan in Mongolia; thanks to exceptional excavations in the field, they are rediscovering the lost cities of the Mongol empire.

Thanks to exceptional excavations in four lost cities of the Mongol empire, archaeologists are revealing the visionary society created by Genghis Khan in the 13th century A.D. / C.E.

Hunting down the female gladiators who fought in the great amphitheatres of ancient Rome, an international team uncover evidence that restores these amazing women to their rightful place in history.

For decades most experts have been convinced that Africa is the cradle of mankind, but researchers have come across more finds in recent years that cast doubt on this well-established theory.

In this episode, we explore the first few years on the European battlefield, from the invasion of France and the subsequent Dunkirk evacuation to Hitler's betrayal of his pact with Stalin.

The early years of WWII caused devastation throughout Europe; the 1939 non-aggression pact between the Germans and Russians had promised safety for the Soviet Union, but Hitler was not to be trusted.

Bettany travels to Azerbaijan, which sits between the Caspian Sea and the Caucasus Mountain range; it was a strategic position on the ancient Silk Roads that left a legacy of diverse cultures.

In the eastern Maya Lowlands, a dynasty once shrouded in mystery gradually emerges as the most powerful political force of the Classic Maya world: the Kaanul, identified by their serpent emblem.

WWII was a war in the skies; though the Treaty of Versailles had prevented the Germans from developing new weapons, they sponsored air clubs and pushed for supremacy in the air.

After France's defeat, British and French consuls battled for Egypt's antiquities. Explorer Belzoni joined the race to seize the colossal Young Memnon as their ruthless rivalry intensified.

Rudolf Höss, the commandant of Auschwitz, oversaw the industrialised murder of over a million people. After the war, his confessions exposed the horrifying mechanics behind the Nazi death camps.

Historians and archaeologists set off in the footsteps of Genghis Khan in Mongolia; thanks to exceptional excavations in the field, they are rediscovering the lost cities of the Mongol empire.

Thanks to exceptional excavations in four lost cities of the Mongol empire, archaeologists are revealing the visionary society created by Genghis Khan in the 13th century A.D. / C.E.