These are some of the other sites that I've visited, but, for various reasons, don't have pictures of them. I've provided links to the sites, as well as my recommendations for specific features, exhibits, etc.
National Air & Space Museum
Recommended: Milestones of Flight
Recommended: The Wright Brothers & The Invention of the Aerial Age
National Gallery of Art
Recommended: Frederic Remington - The Color of Night
National Museum of Natural History
United States Holocaust Memorial Museum
Recommended: The USHMM Online Exhibitions
