Montezuma is one of the best preserved cliff dwellings in North America. This 20 room high-rise apartment, nestled into a towering limestone cliff, was built by a culture known as the Sinagua about 700 years ago.
(Click on photos to enlarge.)
it is not as well-preserved as the high-rise.
Tuzigoot is an ancient village or pueblo also built by the Sinagua. The pueblo consisted of 110 rooms, including second and third story structures. The first buildings were built around A.D. 1000.
of these structures (I was), it's because they were constructed of
wood. The wood roofs eventually rotted.