Yuma Crossing State Historic Park commemorates 5 centuries of history in its museum and along its winding pathways through 9 acres past 6 restored and 6 replicated buildings. The park is a salute to historic modes of transportation and is recognized as a key location in the cultural and educational development of western history by the National Endowment for the Arts.
Pioneer Museum (Flagstaff) The Pioneer Museum in Flagstaff is located in the historic Coconino County Hospital for the Indigent. The Hospital was built in 1908 using pumiceous dacite from the Mount Elden Explosive Eruption about 500,000 years ago. The building was used as a hospital until 1938 and was considered a Poor Farm. The exhibits within the museum reflect the history of Flagstaff and northern Arizona.
Biosphere2 is the largest closed dome research facility ever attempted. Built in the 1990s as an experiment at living on Mars. Despite many issues, the project had many breakthroughs, such as the psychological problems of teams in close proximity, the limited ability to grow sufficient food, the destructive ability of insects and the nature of concrete to eat O2 and generate CO2. 7 people lived inside for 2 years. The project, outside Tuscon, eventually dissolved and is part of U of Arizona.