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St. Paul's Cathedral

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.

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ABOUT TIME SCANNERS

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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.

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