Love to read stories like this one:

http://www.huffingtonpost.com/nick-carr/the-secret-bowling-alley_b_376623.html

The upshot is: A fellow bought a property and discovered that, in the basement, there was a secret manual bowling alley.  He guesses that it might have been part of an illegal speakeasy that operated there during the days of prohibition.

If you're interested, there are plenty of neat photographs of the place to be found at that link!