The "7 Wonders of the Ancient World" refers to a list of remarkable constructions known to the ancient Greeks. These wonders include the Great Pyramid of Giza, 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. Most of these structures were built between the 3rd century BC and the 2nd century AD. Only the Great Pyramid of Giza still exists today, while the others have been destroyed by time, natural disasters, or human actions. The list serves as a testament to the ingenuity and creativity of ancient civilizations, showcasing their architectural and artistic achievements.