Ancient Sumer did not have a central capital city, but it had several cities that became greatly important during its existence.
Ancient Sumer did not have a central capital city, but it had several cities that became greatly important during its existence. Uruk was one such important city and the most popular in Sumerian history. It was the first major city of the Sumerian civilization (and the capital of Sumer) and, by extension, the first city of the ancient world. Uruk was once ruled by Gilgamesh, who built great walls around the city.