The USS Bowfin, which also serves as a museum. I can't recall if it was the Bowfin or one of the ships now serving as a musum, but in a book I had read, they had mentioned that one of the rooms was off-limits to tourists due to health inspectors saying it did not pass code. The interesting thing? It's the same as it was when sailors lived and worked on it. One of those things that makes you wonder.