Babylon was a city-state of ancient Mesopotamia, in present-day Iraq, about 85 kilometers (55 mi) south of Baghdad. All that remains of the original ancient city of Babylon today is a mound of broken mud-brick buildings and debris in the fertile Mesopotamian plain between the Tigris and Euphrates rivers.
Babylon was at first a small town which sprung up at the beginning of the 3rd millennium BCE. The town flourished and became well-known and important. Babylon eclipsed Nippur as the 'holy city' of Mesopotamia. This was about from 612 to 539 BCE. It was the time Hammurabi first unified the Babylonian Empire. Babylon became the capital city of the Neo-Babylonian Empire .
The Hanging Gardens of Babylon were one of the Seven Wonders of the Ancient World.