The Minuteman Missile National Historic Site includes three sites along a fifteen-mile stretch of Interstate 90 in Western South Dakota. Congress authorized the park in 1999 to preserve components of the Minuteman II intercontinental ballistic missile system. The site includes the Delta-01 Launch Control Facility, the missile silo at Delta-09 and the visitors center. “The Delta-01 Launch Control Facility provides a remarkable opportunity to view the front line of the Cold War,” Superintendent Eric Leonard said in a 2020 news release.