That I know of, in the United States, there are cliff dwellings in four states, New Mexico, Utah, Colorado, and Arizona.
I've only been to the ones in New Mexico.
One thing you might not know about. If you are of age enough, that is a senior citizen or a disabled individual, some US Forest Sites can be free of charge or, you may only be required to pay one half of the fee/s regularly charged to non seniors.
When I visited the dwellings in New Mexico, my admission was free because I obtained a Golden Access Passport.
Read more...
USDA Forest Service - Recreation, Heritage and Wilderness