Babylon was a city-state of ancient Mesopotamia, the remains of which are found in present-day Al Hillah, Babil Province, Iraq, about 85 kilometers (55 mi) south of Baghdad. All that remains of the original ancient famed city of Babylon today is a mound, or tell, of broken mud-brick buildings and debris in the fertile Mesopotamian plain between the Tigris and Euphrates rivers, in Iraq. Although it has been reconstructed, historical resources inform us that Babylon was at first a small town, that had sprung up by the beginning of the third millennium BCE (the dawn of the dynasties). The town flourished and attained prominence and political repute with the rise of the First Babylonian Dynasty. It was the "holy city" of Babylonia by approximately 2300 BCE, and the seat of the Neo-Babylonian Empire from 612 BCE. The Hanging Gardens of Babylon were one of the Seven Wonders of the Ancient World.