This former ICBM missile site was decommissioned after the collapse of the Soviet Union in 1991. It then lay abandoned until just recently when it was restored and opened as a Cold War museum.
This site consisted of 4 silos connected by various tunnels. It is creepy to think that the 70-foot long R-12 Dvina nuclear missiles once based there could speed through the air at over two miles a second, up to a range of 1,300 miles, and then explode with a force several times more powerful than the atomic bomb dropped on Hiroshima. Thank goodness it never came to that.