The ancient Jordanian city of Petra is examined with 3D laser-scanning technology. Included: the Monastery, Petra's largest building, which was carved out of a mountainside; and what lies beneath the city.
An examination of St. Paul's Cathedral in London, where Prince Charles and Lady Diana Spencer were married. Designed by 17th-century architect Christopher Wren, it features a majestic dome that is actually three domes in one. Included: how Wren overcame unstable foundations and structural forces to support the dome; and how the cathedral survived a direct hit by a German bomb during the London Blitz.
The secrets of the Egyptian pyramids are revealed through the use of 3D laser-scanning technology. Included: Djoser's Step Pyramid at Saqqara; Meidum's collapsed pyramid; the Bent Pyramid at Dashur; and the Great Pyramid at Giza.