The Great Archive of Labyrinthia is a location in Professor Layton vs. Phoenix Wright: Ace Attorney. It is managed by Ridelle Mystere. Professor Layton and Luke visit the library to get the "Grand Grimoire".

The library has a secret basement, which contains information about the attack of Great Witch Bezella on Labyrinthia roughly 10 years ago. Clues to find its entrance are hidden in the "Grand Grimoire".

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