The company 20th Century Castles, LLC has about a dozen old missile / communications bases that are scattered throughout the US for sale.
Some of them are fixed up and renovated and are currently livable, others need a lot of cleaning up.
If I had the money, I’d probably buy one of the underground communications bunkers, then build a nice new house around it at ground level. 10000 sq. ft. of underground floor space would make a heck of a vault for motorcycles, guns, and other assorted toys.
I always thought this would be a cool idea, but I didn’t know the government was actually selling any of the unused bases.