Lost Worlds

In this episode we reconstruct the grand hypostyle hall at Karnak; explore the technical innovation and engineering skill that produced the temple at Abu Simbel and rebuild the Ramesseum as he would have seen it.

Lost Worlds explores the tunnels beneath some of London's greatest buildings. The underground command centre from where the Battle of Britain was won is just one of the secret bunkers toured in this episode.

It has been rebuilt more than 20 times since his death, but what was Jesus' Jerusalem really like?

A team of field investigators uncover the clues that will recreate vanished or hidden worlds. They use the latest research, expert analysis and cutting-edge graphics technology to take us back.

At the end of the 13th century, Scotland was a country under attack. Defeat seemed inevitable. But from nowhere emerged a man who became Scotland's greatest hero - William Wallace, commonly known as Braveheart.

From the truth behind the Olympic stadium to the Triumphal Arch, we uncover Hitler's ideal Germany.

Now, two and a half thousand years later, we restore Athens to its former glory, we re-create impregnable fortifications; the first senate house; experience the power of the Greek navy; and rebuild one of the most advanced water systems in the world.

From greed and gore to Grand Masters, we recreate this covert world of secrets and power.

In 1939, a group of scientists warned FDR that Nazi Germany might be developing an atomic bomb. Roosevelt instantly issued an order: America had to make the first weapon. We recreate this hidden world of classified nuclear facilities.

In the heart of the Mediterranean, a peaceful island explodes with devastating force - it will be the biggest volcanic eruption in three and a half thousand years of recorded history.

An epic journey to the places that heard the word of St Paul and inspired the birth of Christianity.