Two nations - France and America - compete to build a path just 50 miles long that will connect the Atlantic and Pacific Oceans; completing it will require overcoming every obstacle imaginable.

After the London Underground becomes the first subway system in the world, visionary engineers in New York and Boston try to build the first one in America.

Jan 1944: Two divisions land at the Italian port of Anzio in one of the easiest Allied assaults of the war. But they fail to exploit their advantage, giving the German defenders time to reinforce.

Nazi naval commander Karl Donitz claimed after the Second World War that he'd only been a sailor following orders, but we set out to prove that he earned his bloody role as Hitler's successor.

Cleopatra, the seventh of her name, is history's most famous Ptolemy - heir to a Greek dynasty ruling Egypt for centuries. How did these foreign pharaohs blend Greek and Egyptian traditions?

Jan-May 1944: Atop the hill in Monte Cassino lies an abbey of which its Commander has forbidden its military use. Despite this, the abbey is reduced to rubble and the fight claims over 200,000 deaths.

This iconic statue was a gift from France to the new-born American Republic. The documentary brings us at the heart of the Statue's construction, revealing the founding ideals of our democracies.

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.

Air supremacy has been key to winning a war since the dawn of aerial warfare; from the Sopwith Camel biplane to the F22 Raptor, we identify and rank the most influential aircrafts in history.

Tracing the origins of his sadistic pseudo-science, we investigate Josef Mengele, the notorious demon doctor of Auschwitz.

Two rival rail companies compete to create the most ambitious engineering project the world has ever seen, an unprecedented railway that crosses the American continent.

A little-known 19th-century French artist embarks on an impossible 20-year odyssey to build the tallest statue in the world and erects it on US soil.

Two master roadbuilders spend decades struggling to create a highway system that connects every city and town in America that becomes the greatest public works project in history.

Two nations - France and America - compete to build a path just 50 miles long that will connect the Atlantic and Pacific Oceans; completing it will require overcoming every obstacle imaginable.

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.

20th-century battles have changed the course of history; the Battle of the Somme saw over 60,000 casualties on the first day alone and D-Day marked the beginning of Hitler's ultimate defeat.

The 1969 Moon landings were regarded as man's greatest achievement; what was not well-known is that the men behind the mission were engineers of one of the darkest periods in human history.

The Berlin Olympics of 1936 were innovative, introducing television coverage and the torch relay. We show the highlights, but also how Hitler used the Games as propaganda for his brutal regime.

Jan 1944: Two divisions land at the Italian port of Anzio in one of the easiest Allied assaults of the war. But they fail to exploit their advantage, giving the German defenders time to reinforce.

Pierrefonds looks like a 14th-century fortress, yet it is a 19th-century masterpiece. We uncover how a ruined stronghold became a revolutionary hybrid of Middle Ages and Industrial Age innovation.

Nazi naval commander Karl Donitz claimed after the Second World War that he'd only been a sailor following orders, but we set out to prove that he earned his bloody role as Hitler's successor.

After the London Underground becomes the first subway system in the world, visionary engineers in New York and Boston try to build the first one in America.

Two brave visionaries endure failure and heartache a century before the internet while risking everything to connect the United States to the rest of the world with a cable under the ocean.

Engineer Joseph Strauss and US President Herbert Hoover battle side by side to build the two longest suspension bridges of all time - the Golden Gate and the Bay Bridge - in San Francisco.