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It includes the land, but its probably about 30 foot square at the most. Its postage stamp sized.

You are completely correct then it is really over inflated. It would be really cool to own one, do it up and turn it into a man cave though.

I went in this one once http://www.secretbunker.co.uk a lot bigger than this one, was really cool inside.

I've seen this page appear when I was trying to find out about this bunker. It looks like a decent place to visit. I might have to put it on the list!