The Colorado National Monument Visitor Center Complex in Colorado National Monument is an example of the park services facilities designed and built as part of the Mission 66 program. The complex includes the visitor center designed by National Park Service architect Cecil J. Doty the Bookcliff Shelter designed by NPS architect Phil Romigh and the Canyon Rim Trail designed by NPS landscape architects Babbitt Hughes and built between 1963 and 1965. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Building