Ur - Ur was one of the first cities in Mesopotamia, that was founded in 3,800 BC. It was located near the Persian Gulf.
Uruk - Uruk is now located in modern day Iraq and was ruled by Gilgamesh in the BC of the 27th century.
Lagash - This city was located east of Uruk. Laglash had a temple named E-Ninnu which was dedicated to Ningirsu, the well known God of healing and farming.