Ur was a major Sumerian city-state in ancient Mesopotamia, founded around 3800 BC and abandoned after 500 BC. The city was an important urban center, with a rich culture and history, and its ruins have been excavated to reveal a wealth of information about ancient Sumerian society. The city's history is marked by various periods of rise and fall, including the Early Dynastic period, the Akkadian period, and the Ur III period. The site of Ur is now a tourist destination and a source of archaeological interest.