Among his military exploits were the conquest of Lagash and the defeat of his former masters at Uruk. He was eventually recognized as a significant regional ruler (of Ur, Eridu, and Uruk) at a coronation in Nippur, and is believed to have constructed buildings at Nippur, Larsa, Kish, Adab, and Umma. He was known for restoring the roads and general order after the Gutian period. It is now known that the reign of Puzur-Inshushinak in Elam overlapped with that of Ur-Nammu. Ur-Nammu, who styled himself "King of Sumer and Akkad" is probably the one who, early in his reign, reconquered the territories of central and northern Mesopotamia that had been occupied by Puzur-Inshushinak, possibly at the expense of the Gutians, before going on to conquer Susa.