Uxmal is a large pre-Columbian ruined city of the Maya civilization in the state of Yucatán, Mexico. Maya chronicles say that Uxmal was founded about 500 A.D. by Hun Uitzil Chac Tutul Xiu. For generations Uxmal was ruled over by the Xiu family, was the most powerful site in western Yucatán, and for a while in alliance with Chichen Itza dominated all of the northern Maya area.Uxmal was dominant from 875 to 900 CE. The Maya dynasty expanded their dominion over their neighbors. This prominence didn't last long. Population dispersed around 1000 CE. After the Spanish conquest of Yucatán (in which the Xiu allied themselves with the Spanish), early colonial documents suggest that Uxmal was still an inhabited place of some importance into the 1550s, but no Spanish town was built here and Uxmal was soon after largely abandoned.