Orkney Islands Council also uses its bunker as a meeting room and has kitted it out with video conferencing equipment.

BBC: Bunker mentality: The Cold War bunkers still in use

Upon entering the bunker, decontamination showers greet visitors and lead into a massive room with 17-foot-high ceilings.

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For example, a home shelter, he says, should be able to serve as a storm shelter against hurricanes, a pantry, a secure room for storing weapons, and as a fallout bunker in the event of nuclear attack.

CNN: Survivalists get ready for meltdown