Minuteman Missile National Historic Site

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Minuteman Missile National Historic Site was established in 1999 to illustrate the history and significance of the Cold War, the arms race, and intercontinental ballistic missile (ICBM) development.

This National Historic Site consists of three facilities: a main office and two significant Cold War-era sites, a launch control center and a missile silo/launch facility, formerly operated by the 66th Strategic Missile Squadron of the 44th Strategic Missile Wing, headquartered at Ellsworth Air Force Base in Rapid City, South Dakota. The facilities represent the only remaining intact components of a nuclear missile field that once consisted of 150 Minuteman II missiles, 15 launch-control centers, and covered over 13,500 square miles (34,964.8 km2) of southwestern South Dakota.

The silo, known as launch facility Delta Nine (D-09) was constructed in 1963. It occupies 1.6 acres (6,000 m2) nearly one-half mile (800 m) southwest of Interstate 90 at Exit 116 and six miles (10 km) from the town of Wall, South Dakota, in eastern Pennington County.