The Wings Over the Rockies Air and Space Museum (WOR) is located on the former grounds of Lowry Air Force Base in Denver, Colorado. The museum, which opened in 1994, is housed in the 40,000 sq ft (4,000 m) Hangar #1 built in 1939. The museum preserves the history of Lowry AFB's operations from 1938 to 1994 in its collections, archives, and research library. Features of the museum's collection includes Colorado Aviation Historical Society's Alexander Eaglerock biplane built in Englewood, USAF's B-1A Lancer bomber, and many other military and generation aircraft.