The Air and Space Museum is one of the most popular Smithsonian museums. Everyone flocks to see the Wright brothers' flyer, Chuck Yeager's Bell X-1, Charles Lindbergh's Spirit of St Louis, Amelia Earhart's natty red plane and the Apollo Lunar Module. An IMAX theater, planetarium and flight simulators are all here ($7 to $9 each). More avionic pieces reside in Virginia at the Steven F Udvar-Hazy Center, an annex to hold this museum's leftovers.