 The library is known for homing bats which protect the books from insect damage.The Library was used in "Gulliver's Travels" (1996) as the Great Chamber of War for the Emperor of Lilliput.The rectangle behind the church and the palace houses the friary of the Franciscan friars of Arrábida Order ("Ordem de São Francisco da Província da Arrábida") with cells for about 300 friars in long corridors on several floors.