The Seven Wonders of the World or the Seven Wonders of the Ancient World (simply known as Seven Wonders) is a list of remarkable constructions of classical antiquity given by various authors in guidebooks or poems popular among ancient Hellenic tourists. Although the list, in its current form, did not stabilise until the Renaissance, the first such lists of seven wonders date from the 2nd–1st century BC. The original list inspired innumerable versions through the ages, often listing seven entries. Of the original Seven Wonders, only one—the Great Pyramid of Giza, oldest of the ancient wonders—remains relatively intact. The Colossus of Rhodes, the Lighthouse of Alexandria, the Mausoleum at Halicarnassus, the Temple of Artemis and the Statue of Zeus at Olympia were all destroyed. The location and ultimate fate of the Hanging Gardens of Babylon are unknown, and there is speculation that they may not have existed at all.