Acoma Sky City, Chaco Canyon & Aztec Ruins
New Mexico's northwest quadrant contains three of the most significant Native American cultural sites in North America. Acoma Pueblo (Sky City) is the oldest continuously inhabited settlement in the United States — a village on a 367-foot sandstone mesa occupied for over 2,000 years, accessible only by guided tour. Chaco Culture National Historical Park, 150 miles north, is the ceremonial center of an 11th-century Puebloan civilization that constructed the largest stone buildings in North America before European contact; the astronomical alignments of the great houses at Chaco are among the most sophisticated examples of ancient architecture in the Americas. Aztec Ruins National Monument in New Mexico contains the best-preserved great kiva in the Southwest.