The Space Shuttle Enterprise in the James S. McDonnell Space Hangar at the Smithsonian's Udvar Hazy Center Museum. Wow that was a mouthful. It's really quite amazing to walk into this hanger and see a space shuttle parked right in front of you. Even if that shuttle has never been in space. This was a test vehicle and was flown off the back of a specially modified 747. Astronaut and Enterprise test pilot John Young once mentioned that the Enterprise had the gliding characteristics of a brick. More Udvar Hazy Center images here.