Semi-OT: in sweden some guys bought an old mining facility, and use it for paintball!
Only buildings they can use is "only" a 9 story high building thats super awesome to play in and the old office:
the inside of the bigger building:
the place reminds alot of like chernobyl :P
(they have big games 3 times a year there too, its such a fun and unique environment to play in)