Fifty years have passed since the Cheyenne Mountain Complex went fully operational. Now, the US Air Force has given us a chance to look inside the legendary military installation made famous by the Terminator series [update: and by Stargate SG-1!].
Nuclear bunkers have fallen out of fashion in recent years, but that doesn't mean you can't transform one into a delightful bed and breakfast. This bunker in Scotland is currently up for sale and even includes a fascinating history: It's situated on a former POW camp.