Trinity College Library
I know this might not be a weird bookcase or something interesting, but just look at all the books. There must be thousands and thousands. That is one library that I would love to get lost in. You can tell they have a lot of books because of how they categorize it. They will do ABC, then they will do AA,AB,AC and then work their way up. A weird way to categorize but it must be effective because it looks organized.