Minuteman Missile National Historic Site

The missile is still in the silo. Disarmed, demilitarized, but there — a Minuteman II sitting 80 feet down in a reinforced concrete tube beneath the South Dakota prairie, visible through a glass enclosure because the Strategic Arms Reduction Treaty required Russian satellites to confirm it wasn't operational. The site preserves two components of a nuclear field that once covered 13,500 square miles: the Delta-09 silo and the Delta-01 Launch Control Center, buried 31 feet underground, where guided tours run six people at a time. Everything else in the complex has been destroyed.