Montezuma's Castle

Near the town of Camp Verde in Arizona, USA, there are some well preserved cliff dwellings, built by the Sinagua People, a pre-columbian culture, sometime between approximately 1100 and 1425 AD.
Although it is now called "Montezuma's Castle", it really has neither any connection with Montezuma, the famous Aztec emperor,  nor is it a castle.
It is, in fact, and was used very much like an early High Rise apartment building.
It was built into the vertical rock face, 27 meters up a sheer lime stone cliff.
Was this elevation used for defence purposes, or, more likely, to protect themselves from the annual flooding of the nearby "Beaver Creek"?

Whatever the facts about this amazing structure may be, here are some pictures, taken several years ago on one of my many trips through the United States of America.