Sumer is a city of the Babylonian civilization in Civilization II. This city is the capital of the Sumerian Civilization. Sumer was also an important city in the Babylonian civilization. The city of Sumer is actually a collection of several small villages all clustered together in the southernmost part of Mesopotamia. The village of Ur is one of these small villages and it is one of the most important because at one time Ur was the capital of the Summerians.