This Museum is currently displaying Neil Armstrong’s spacesuit from the historic Apollo 11 Moon landing, back on display for the first time in 13 years following a conservation process. Other exhibits include Moving Beyond Earth, Human Spaceflight, Missiles and Rockets, Explore the Universe, and Space Race. Collections include Lunar Module #2, Apollo.
Smithsonian National Air and Space Museum has two locations, one in Washington, DC, and the other in Chantilly, Virginia.
See Leisure Explorers Bill and Denise Semion’s blog post A Monumental Journey for more on visiting Washington, DC, while RVing.