<human>:  What is the history of the seven wonders of the world?
<bot>: The Seven Wonders of the Ancient World were first defined by ancient Greek historians in the 2nd century BC. They consisted of the Great Pyramid of Giza in Egypt, the Hanging Gardens of Babylon, the Statue of Zeus at Olympia, the Temple of Artemis at Ephesus, the Mausoleum at Halicarnassus, the Colossus of Rhodes, and the Lighthouse of Alexandria. All of the wonders have either disappeared over time owing to natural catastrophes, or were destroyed by human hand. The Great Pyramid of Giza is the only one that still stands.