Coba
archeological site of Pre-Columbian Maya
Cobá (pronounced koh-BAH, with the stress on the second syllable) is a large ruined city of the Pre-Columbian Maya civilization in the state of Quintana Roo, Mexico. It is about 90 km east of the Maya site of Chichen Itza, about 40 km west of the Caribbean Sea, and 44 km northwest of the site of Tulum, with which it is connected by a modern road.

Cobá is estimated to have had some 50,000 inhabitants (and possibly significantly more) at its peak of civilization, and the built up area extends over some 80 km². The site was occupied by a sizable agricultural population by about 300 BC. The bulk of Cobá's major construction seems to have been made in the middle and late Classic period, about 500 to 900, with most of the dated hieroglypic inscriptions from the 7th century. However Cobá remained an important site in the Post-Classic era and new temples were built and old ones kept in repair until at least the 14th century, possibly as late as the arrival of the Spanish. It was a transportation hub, the center of a network of roads called sacbeob connecting it to other Maya cities.
Cobá, like all archaeological sites in Mexico open to the public via INAH, is free to Mexican citizens on Sundays and national holidays.