The Pyramid of North Dakota
The Stanley R. Mickelson Safeguard Complex, also known as the Pyramid of North Dakota is a group of military facilities in North Dakota. It was built to support the army’s safeguard anti-ballistic missile program’s. The site was fully operational in 1975 at the cost of $15 billion (adjusted for inflation). However it was decommissioned when it was deemed ineffective. The complex was operation for 4 months. After that it was mothballed and military security monitored the site until 2011. The entire complex was sold in 2012 to a hutterite colony at auction. Today, the colony still owns most of the property while another portion was bought for preservation and possibly tours in the future.