At the height of the Cold War, many of America's western states saw an abundance of Missile Silos. Kansas had the most, but other Great Plains States (Nebraska, Oklahoma, North Dakota, and South Dakota) weren't all that far behind. With that ending, many of our nation's missile silos became obsolete and, within a few years, were decommissioned and torn down. Get our free mobile appWhere Can You Find the Cold War Missile Silos in the Mount Rushmore State? -Minuteman Missile WebsiteTo learn more about the Minuteman Missile National Historic Site and to find tour information, check out the website here.