Hidden in the rainforest, Tikal was the capital of the most powerful kingdom built by the Maya; now new technologies such as LiDar allow researchers to reveal new secrets about this exceptional place.

The Eiffel Tower might never have seen the light of day; it owes its existence to the tenacity of visionary engineer Gustave Eiffel prevailing over his main rival architect Jules Bourdais.

November 1944: as the Allies advance into Germany, they run into concrete bunkers, pillboxes, minefields and tank traps. German soldiers fight tenaciously to defend their homeland.

What happened to Mary Magdalene after the resurrection of Jesus? We follow history enthusiasts in southern France on their quest to find the remains of the saint in a place no-one has searched before.

The remains of 7,000 humans were discovered in the Hal Saflieni Hypogeum, Malta's Neolithic temple; could the temple reveal the mystery of who they belonged to and what happened to its owners?

Hitler's DNA is discovered for the first time in history as experts investigate what it reveals about his heritage and his formative years.

October 1944: the Allies face a major supply crisis - vital fuel and ammunition still has to be landed at the D-Day beaches. When the port of Antwerp is liberated, it seems the crisis might be over.

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.

Espionage and intelligence were crucial during WWII; clever camouflage, the Enigma machine, and concealable weapons were as important as any tank, ship, aircraft or bomb.

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.

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?

Hidden in the rainforest, Tikal was the capital of the most powerful kingdom built by the Maya; now new technologies such as LiDar allow researchers to reveal new secrets about this exceptional place.

The Eiffel Tower might never have seen the light of day; it owes its existence to the tenacity of visionary engineer Gustave Eiffel prevailing over his main rival architect Jules Bourdais.

Britain and France declare war when Hitler invades Poland; in May 1940, the Germans attack Holland and Belgium as a decoy. As the Wehrmacht and Luftwaffe strike in force, the French seem trapped.

The Western and Soviet Allied forces meet at Torgau on the Elbe river; the Western troops, having landed at D-Day, descend on Germany from the West while the Soviets march from the East.

This documentary takes us back in time to the Cold War era as we unravel the story of Joseph Stalin's daughter Svetlana as she embarks on a daring escape to the West in 1967.

November 1944: as the Allies advance into Germany, they run into concrete bunkers, pillboxes, minefields and tank traps. German soldiers fight tenaciously to defend their homeland.

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.

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.

Chambord is the largest of the Loire castles; with 220,000 tons of stone needed for its construction, it is one of the most important building sites of the Renaissance.

The Mayan city of Chichen Itza was the capital of a powerful civilisation - the 'water wizards' of the Itzas - but was mysteriously abandoned between the 11th and 13th centuries.