You’ll search for answers to tricky and humorous questions while exploring the best of the National Air & Space Museum’s Udvar-Hazy Center. Housed in two giant hangars near the Dulles airport, the collection includes more than 200 planes, helicopters, gliders, space vehicles and more. Highlights include a full-sized Concorde plane and space shuttle, a Blackbird jet that looks like it came from a sci-fi movie, the actual Enola Gay airplane, an airman’s wacky “party suit”, and the original spaceship from Close Encounters of the Third Kind. Advance purchase is required.