Fodor's Expert Review South Dakota Air and Space Museum

You won't find many free museums with as much to take in as this one. See General Dwight D. Eisenhower's B-25 bomber, a B-1 Bomber, and more than 30 planes, helicopters, and missiles on the outdoor grounds. Inside, there are interactive exhibits, including one about the experimental, stratospheric balloon launches from the Black Hills during the 1930s. During the summer, tours of Ellsworth Air Force Base and a preserved Minuteman missile silo are available for a nominal fee.