The Hanging Gardens of Babylon were one of the Seven Wonders of the Ancient World as listed by Hellenic culture, described as a remarkable feat of engineering with an ascending series of tiered gardens containing a wide variety of trees, shrubs, and vines, resembling a large green mountain constructed of mud bricks, and said to have been built in the ancient city of Babylon, near present-day Hillah, Babil province, in Iraq. Its name is derived from the Greek word kremastós (κρεμαστός, lit. "overhanging"), which has a broader meaning than the modern English word "hanging" and refers to trees being planted on a raised structure such as a terrace.

Read more:

https://en.wikipedia.org/wiki/Hanging_Gardens_of_Babylon