500
These make up the Seven Ancient Wonders of the World. (only need 4, all 7 for bonus points)
What are the Pyramids of Giza, the Colossus of Rhodes, the Hanging Gardens of Babylon, the Statue of Zeus at Olympus, the Lighthouse of Alexandria, the Temple of Artemis at Ephesus, and the Mausoleum at Halicarnassus?