The other big kid-pleaser of the museums (along with the Fleet Science Center, above), this popular facility provides an overview of the nation's air-and-space history, from the days of hot-air balloons to the space age, with plenty of biplanes and military fighters in between. It emphasizes local aviation history, particularly the construction here of the Spirit of St. Louis. Highlights include the only GPS Satellite on display in a museum, and a World War I-era Spad. The museum is housed in a stunning cylindrical hall built by the Ford Motor Company in 1935 (for the park's 2nd international expo), and has an imaginative gift shop with items like old-fashioned leather flight hoods and new-fashioned freeze-dried astronaut ice cream. Allow at least an hour for your visit.