This library was founded in the 15th century by Pope Sixtus IV and it is stilled replenished with new books on a regular basis. Today its collection includes approximately 1.6 million printed books, 150,000 manuscripts, 8,300 incunabula, more than 100,000 engravings and maps, and 300,000 coins and medals. Each year the library is replenished with 6,000 new books.