Hidden in Plain Sight

During the Cold War, a vast arsenal of nuclear missiles were placed in the Great Plains. Hidden in plain sight, for thirty years 1,000 missiles were kept on constant alert; hundreds remain today. The Minuteman Missile remains an iconic weapon in the American nuclear arsenal. It holds the power to destroy civilization, but is meant as a nuclear deterrent to maintain peace and prevent war. Read More

People stand inside a fenced compound on a prairie landscape

Current Operating Conditions

Learn more about what facilities and services will be available during your visit.

Screenshot of virtual tour showing an underground space

Virtual Tours

Visit the front line of the Cold War from the comfort of your digital device. Go behind the scenes inside Delta-01 and Delta-09.

View down a round silo with a missile

Visit a Nuclear Missile at Delta-09

The Delta-09 missile silo allows a rare opportunity to view a nuclear missile once on constant alert during the Cold War.

An American flag flys in front of a building inside a high fence

Visiting Delta-01

Inside the security of a high fence, the Delta-01 facility housed ten Air Force personnel and directly controlled ten missiles.

Visitors wait to be served by a park volunteer at an informaiton desk

Plan Your Visit

A park visit provides an opportunity to explore sites once top secret and restricted. Advance planning is key to ensure you see it all.

A group of people in a small room with electronic panels.

Reserve Your Tour of Delta-01

Tours of the Delta-01 Launch Control Facility are offered daily. Advanced reservations are required for all guided-tours.

Park ranger listens to a cell phone near a glass structure

Cell Phone Tour

A ranger-narrated Cell Phone tour explains the history of the Cold War Minuteman Missiles on the Great Plains.

Last updated: May 26, 2020

Contact the Park

Mailing Address:

24545 Cottonwood Road
Philip, SD 57567


(605) 433-5552

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