For 2,600 years, Carcassonne has stood as Europe's ultimate fortress. Blending archaeology and engineering, we learn how innovation, strategy and restoration shaped an 'impregnable' citadel.

The Church of the Holy Sepulchre is the most sacred Christian site in the world; defied by time, wars and earthquakes, it was rebuilt many times and now excavations reveal its secrets as never before.

We begin at the start of the German invasion of Poland and the segregation of Jews into ghettos; Mussolini joins Hitler in his fight, and Winston Churchill is appointed as British Prime Minister.

How did Hitler succeed in transforming a republic into a 'Führer state' in such a short time, how did the 'enforced conformity' of society take place, and how willingly did the Germans fall in line?

March 1945: the Allies have reached the River Rhine. Montgomery plans a giant operation to cross the river in the north, but luck hands the Americans a bridge over the Rhine at Remagen.

For 2,600 years, Carcassonne has stood as Europe's ultimate fortress. Blending archaeology and engineering, we learn how innovation, strategy and restoration shaped an 'impregnable' citadel.

When Japan's expansion in the Pacific reaches fever pitch, Roosevelt must act. Instead of having them back down by cutting off oil supplies, he pushes them to attack the US fleet in Pearl Harbor.

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.

How could a nobody become a dictator and bring down a democracy in just a few years, what crucial events helped Hitler gain respectability and influence, and who were his supporters?

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.

Aachen Cathedral is a 1,200-year engineering marvel. We decode the 'smart' mortar, the hidden iron ring stabilising the cupola, and the metal reinforcements that let stained glass replace stone.

For 2,600 years, Carcassonne has stood as Europe's ultimate fortress. Blending archaeology and engineering, we learn how innovation, strategy and restoration shaped an 'impregnable' citadel.

The Church of the Holy Sepulchre is the most sacred Christian site in the world; defied by time, wars and earthquakes, it was rebuilt many times and now excavations reveal its secrets as never before.

In the aftermath of Japan's attack at Pearl Harbor, the Navy moves in for a knockout blow. Japan's next strike is thrown into chaos when its plans are unearthed by an American codebreaker.

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.

In this episode, we explore how Adolf Hitler dragged the world ever closer to war by attacking Jewish people in his country and launching another military invasion abroad.

How did Hitler succeed in transforming a republic into a 'Führer state' in such a short time, how did the 'enforced conformity' of society take place, and how willingly did the Germans fall in line?

We begin at the start of the German invasion of Poland and the segregation of Jews into ghettos; Mussolini joins Hitler in his fight, and Winston Churchill is appointed as British Prime Minister.

The Church of the Holy Sepulchre is the most sacred Christian site in the world; defied by time, wars and earthquakes, it was rebuilt many times and now excavations reveal its secrets as never before.

How did Hitler succeed in transforming a republic into a 'Führer state' in such a short time, how did the 'enforced conformity' of society take place, and how willingly did the Germans fall in line?

The Church of the Holy Sepulchre is the most sacred Christian site in the world; defied by time, wars and earthquakes, it was rebuilt many times and now excavations reveal its secrets as never before.

The Sphinx is the most monumental ancient sculpture in the world at 73 metres long, 20 metres high and 14 metres wide. Who commissioned it, how was it erected, and what is its significance?