Another dip into the archives...
According to Wikipedia, "Montezuma Castle National Monument protects a set of well-preserved dwellings located in Camp Verde, Arizona, which were built and used by the Sinagua people, a pre-Columbian culture closely related to the Hohokam and other indigenous peoples of the southwestern United States, between approximately 1100 and 1425 AD. The main structure comprises five stories and about 20 rooms and was built over the course of three centuries."
