The Hanging Gardens of Babylon were the fabled gardens which beautified the capital of the Neo-Babylonian Empire, built by its greatest king Nebuchadnezzar II (r. 605-562 BCE). One of the Seven Wonders of the Ancient World, they are the only wonder whose existence is disputed amongst historians.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Hanging_Gardens_of_Babylon/.