Mesa Verde National Park

Mesa Verde National Park is a U.S. National Park and UNESCO World Heritage Site located in Montezuma County, Colorado, United States. It is the largest archaeological preserve in the United States The park was created in 1906 by President Theodore Roosevelt to protect some of the best-preserved cliff dwellings in the world, or as he said, "preserve the works of man". The site contains a number of cliff dwellings constructed by the ancient Pueblo peoples between the 6th and 12th centuries at an altitude greater than 2,600 metres (8,500 ft). Some notable examples amongst the 600 dwellings include Cliff Palace, Balcony House, and Square Tower House. The dwellings were discovered in 1874.