Montezuma Castle National Monument

One of the best-preserved cliff dwellings in North America, Montezuma Castle is a five-story, roughly 20-room masonry dwelling tucked into a limestone alcove about 90 ft above Beaver Creek. Built and occupied by the Sinagua people from around 1100 to 1425 CE, it was among the first National Monuments (1906) — misnamed by early settlers who wrongly tied it to the Aztec emperor. A short, shaded paved loop along the creek leads to viewpoints beneath the dwelling, with a visitor center and interpretive exhibits. An easy, high-impact stop right off I-17.