The madness of the Cold War era is best represented by this once super secret facility. Built 720 feet into a hillside under the Greenbrier Resort, the bunker was finished in 1961 as nuclear shelter for members of Congress in the event of a nuclear holocaust with the USSR. Protected by a 25-ton blast door, the two-story facilities are extraordinary. The bunker could house 1,100 people and was equipped with a decontamination chamber, a power plant with purification equipment and three 25,000-gallon water storage tanks, three 14,000-gallon diesel fuel storage tanks, a communications room, a clinic with a medical and dental operating theatre, a lab, a pharmacy, a cafeteria, an intensive care unit, meeting rooms, and more. After the Washington Post published an article revealing its existence, the government decommissioned the bunker in 1992.