The Many Rooms of the Libraritorium

 There are different sections of the Libraritorium.

There is a rope ladder that leads below one of the bookshelves. It leads down to a beach. It is the Midnight Beach, where it is always twilight or night. On this beach, dreams come true. Sometimes literally, sometime figuratively, but for a time they come true.

There are a lot of ladders that lead up the bookshelves as well. They usually lead to a hidden compartment in the bookshelves similar to this one and each one leads to a different place. Some lead to rooms for the victims of the Library, similar to a boarding house, equipped with beds for them to sleep and relax in. Others lead to rooms like the conservatory, where the victims can get a small taste of fresh air from outside inside the Library.

There are other rooms, of course. Rooms that shouldn't even be possible considering how much limited space in between the bookshelves. There is the tea room, which is located at the top of one of the ladders. It is reached by climbing the ladder of one of the smaller bookshelves and opening a door on top of it.

There is also the underground sanctuary, made to ease the minds and spirits of those trapped inside the Library. It is hard to reach and only a select few are allowed to find it.

The Underworld is a hidden level in the Libraritorium. This place is a whole city dedicated to reintroducing those in the Library back into society. It is comprised mostly of NPCs who interact with the residents of the Library. It acts as a portal to thecomplex  and is a two-way door, meaning people from the Complex can get sucked in the Library as well.