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Archaeological Zone of Paquimé, Casas Grandes

Paquimé, Casas Grandes, which reached its apogee in the 14th and 15th centuries, played a key role in trade and cultural contacts between the Pueblo culture of the south-western United States and northern Mexico and the more advanced civilizations of Mesoamerica. The extensive remains, only part of which have been excavated, are clear evidence of the vitality of a culture which was perfectly adapted to its physical and economic environment, but which suddenly vanished at the time of the Spanish Conquest.

http://whc.unesco.org/en/list/560

The Archeological Zone of Paquimé, Casas Grandes is a pre-Columbian archaelogical site.

It began as a group of 20 or more house clusters, each with a plaza and enclosing wall. These single-story adobe dwellings shared a common water system. Evidence shows that Paquimé had a complex water control system that included underground drain systems, reservoirs, channels for water to get to the homes, and a sewage system

http://www.worldheritagesite.org/sites/site.php?id=560