The Aviation Museum is located in the southwest of Washington, not far from the Parliament Building. It is free of charge. It displays a lot of valuable aeronautical equipment and some imitation models, including rockets, airplanes, spaceships and so on. It is a microcosm of American aviation and even world aviation history. Museum interactive content is also very rich, there are touchable objects, virtual flight deck, and dynamic 4D movies, all deepen the experience. It is recommended to visit for at least 3 hours. Except for the 4-day movie fee, all are free. In addition, McDonald's is very crowded. If the visit time is limited, it is not recommended to eat in it. It's basically a model, and the knowledge is very basic. Even the specific values of the first two or three cosmic speeds are not written out (I'm asking too much). As a kid, science popularization is excellent, but for those who want to see it, they still go to the Air Force Museum in Dayton, Ohio (which has only a physical exhibition of B2 bombers, and the Wright brothers). It would be better to go to the Kennedy Space Center in Florida, as the tour guide brother of the American soldier himself said in the Pentagon. And there are too many people in the restaurant who have bad breathing, and the restaurant only has McDonald's and Boston. I really don't want to eat fast food.