library is a location in the episodes " The Real You" and " Paper Pete."
Finn and Jake first use the library while searching for knowledge in the episode "The Real You," but were forced to leave when they made too much noise. The library is run by
Turtle Princess. There is a secret area in the library, which is the Moldo Secret Lair.
Princess Monster Wife," Turtle Princess' bedroom can be seen.
Gotcha!," Lumpy Space Princess added a book she wrote for Turtle Princess in the library.
Finn was in the library during his dream in "
King Worm" for a short while as the third place he is transported to at the beginning of the episode.
The library has large sections with bookshelves containing books. A secret war between the
Pagelings and the Moldos was enacted here. Outside, the Library is seen to be half sunken in the ground.
Chairs with what appears to be the Cosmic Owl on top of them can be seen. This is likely a reference that owls are a symbol of knowledge.
Some of the books seem to be organized by rhyme, such as the "-itties" shelf.