Library

Libraries are naturally generated structures found in strongholds and villages. In a stronghold library, it contains bookshelves, cobwebs and a chandelier made of oak fences and torches. Rarely, chests spawn on top of some bookshelves. The library has a ladder towards a floor with more bookshelves.

Trivia

 * There are about 1-2 libraries in a stronghold.
 * Strangely, the ladder sometimes isn't attached to any block. This could be a glitch.