The Pima Air & Space Museum, located in Tucson, Arizona, is one of the world's largest non-government funded aerospace museums. The museum features a display of nearly 300 aircraft spread out over 80 acres (320,000 m²) on a campus occupying 127 acres (610,000 m²). It has also been the home to the Arizona Aviation Hall of Fame since 1991.
A large number of the museum's aircraft are displayed outside with the remainder located in one of the museum's four display hangars. In addition to the display hangars, the museum has a restoration hangar. Opened to the public in May 1976 with 48 aircraft then on display, the Museum's main hangar houses an SR-71A Blackbird, an A-10 Warthog, a United States Air ForceThrough the Years exhibit, and a mock-up of a control tower.
The nearby Titan Missile Museum is located about 20 miles south of Tucson in Green Valley off of Interstate 19 and features a Titan IIintercontinental ballistic missile still in its silo. Tours of the above-ground and underground installations around the missile are conducted daily. More extensive "top-to-bottom" tours take up to five hours and are conducted several times each month. Reservations are required for a top-to-bottom tour.
Both museums are overseen by the Arizona Aerospace Foundation and are governed by the board of trustees. They are a non-profit 501(c)(3) organization that rely on visitors paying admissions, for trams and AMARG tours, as well as what they spend in the museum stores. They also rely on memberships and contracted events to pay to restore and acquire exhibits.