Famous for the astonishing cliff dwellings built into its rocky outcroppings by the Anasazi people, Mesa Verde National Park is a spectacular monument to the area's history. The dwellings, left behind nearly a thousand years ago by the Anasazi when they migrated to what are now New Mexico and Arizona, are painstakingly constructed and preserved, accessible to visitors by guided tour. Along with ancient dams, pueblos and towers, the dwellings provide a view into the rich archaeology of the park.