Borsippa or Birs Nimrud is an archeological site in Babylon Province, Iraq. The ziggurat is today one of the most vividly identifiable surviving ones, identified in the later Arabic culture with the Tower of Babel. However, modern scholarship concludes that the Sumero-Akkadian builders of the Ziggurat in reality erected it as a religious edifice in honour of the local god Nabu, called the "son" of Babylon's Marduk, as would be appropriate for Babylon's lesser sister-city.
Borsippa was an important ancient city of Sumer, built on both sides of a lake about 17.7 km southwest of Babylon on the east bank of the Euphrates.