The Biblioteca Apostolica Vaticana, or Vatican Apostolic Library, is one of the oldest libraries in the world, established in 1475. It is located within the Vatican City and serves as a repository for a vast collection of manuscripts, books, and historical documents, many of which are of great cultural and religious significance. The library houses over 1.1 million printed books and 75,000 manuscripts, including works from the Middle Ages and the Renaissance. It plays a crucial role in preserving the history of the Catholic Church and is a vital resource for scholars and researchers worldwide.