Each of the 7 wonders of the ancient world was unique--the Colossus of Rhodes, the great pyramids of Giza, the lighthouse of Alexandria, the statue of Zeus at Olympia, the Temple of Artemis in Ephesus, the mausoleum at Halicarnassus, and the hanging gardens of Babylon. Just one of them survives today. Travel back in time to learn how each of these wonders were created, with and without the help of machines.