Nevada Test Site
President Harry Truman established this site as the country's on-continent nuclear weapons testing area, and today the area is open to public tours once a quarter. Visitors have the opportunity to walk through "Doom Town," sets constructed by the Atomic Energy Commission to test the effect of radiation on buildings and the environment, and they'll see the Sedan crater, a 320-foot deep crater that resulted from a nuclear test. To find out the date of the next tour, contact the Department of Energy's Office of Public Affairs. Appointments must be made weeks in advance.