The last remaining Stratoliner, the Flying Cloud, was purchased by the Smithsonian's National Air and Space Museum in 1969. After being stored in the Arizona desert for 20 years, it was restored at Boeing in Seattle, Wash., and in August 2003, it flew to its new home on permanent display at the museum's new companion facility, the Steven F. Udvar-Hazy Center near Washington, D.C.'s Dulles International Airport.