These Christian warrior monks reigned supreme for nearly 200 years. What secrets will the city of Tortosa and Jerusalem's Temple Mount reveal about the holy guardians, the Knights Templar?

Legend has it that the ancient civilisation of Atlantis was wiped out by a volcanic eruption, but could the discovery of spectacular palaces in Crete and Santorini challenge the theory?

A kingdom of vast statues, towering obelisks and temples was the legacy left by the greatest Egyptian Emperor. Cutting-edge graphics recreate Ramses' golden empire.

In the 5th century BC, Pericles paved the way for western civilisation when he raided defence funds to build Athens. Experts recreate the first major city.

The US had to beat the Nazis in the race to create an atomic bomb. They built many secret nuclear facilities. Here, the controversial sites are recreated.

Before WWII was lost, Hitler planned a new Germany full of architectural wonders. Discover the world we could have been living in if the war had gone differently.