Tagek - of the city, it's well out the winding highways outside the Beltway in Dulles, VA. While the Smithsonian does charge $10 for parking, the museum itself is free and incredible to behold. The SR-71, the Space Shuttle, the Concorde, MiG-21s, P-45s and a P-38 Lightning. There are all manner of airplanes, spacecraft and awesome exhibits, plus an IMAX theatre if you get a bit