A hard-driving engineer with a reputation for excellence is on a quest to tame one of the wildest rivers in the United States to bring much-needed water to the arid American West.

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.

June 1944: A stretch of beach overlooked by fortified cliffs created a devastating baptism of fire. Failed plans, missed opportunities and courage make this frontline a major turning point in WWII.

Known as the Butcher of Poland, Hans Frank warped the law to encourage persecution, enslavement, starvation, and genocide - we want to know more.

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.

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.

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.

A hard-driving engineer with a reputation for excellence is on a quest to tame one of the wildest rivers in the United States to bring much-needed water to the arid American West.

The war in Europe is transformed when Hitler unleashes Operation Barbarossa on the 22nd of June 1941; the Nazi invasion of the Soviet Union has begun.

Warfare has always driven the development of technology; from penicillin and pioneering plastic surgery to the development of the internet and GPS, we rank the most influential inventions of warfare.

Deep sea divers hunt for the wrecks of Hitler's dreaded U-Boat fleet off Ireland's Northwest coast while historians unravel the early stages of WWII's longest campaign.

Divers hunt for the wrecks of WWII's longest campaign that lie off Ireland's Northwest coast as historians explore the Allied fight back at sea and the human cost of war.

June 1944: A stretch of beach overlooked by fortified cliffs created a devastating baptism of fire. Failed plans, missed opportunities and courage make this frontline a major turning point in WWII.

Rising 80 metres above Athens, the Acropolis is a high-speed engineering feat forged in an age of war and political ambition. This episode decodes the logistics behind the Parthenon.

Known as the Butcher of Poland, Hans Frank warped the law to encourage persecution, enslavement, starvation, and genocide - we want to know more.

Don Wildman explores deep below ancient ruins as he searches for clues pointing to the true fate of the once-mighty Mayan empire.

Don goes deep beneath the Great Lakes and explores flooded caves as he searches for evidence of a mysterious cave-dwelling society that may have been the first people to reach America.

Don uses new mapping technology to expose the dark and deadly uncharted spaces beneath American cities.