Vatican Library (Biblioteca Apostolica Vaticana) is one of the most significant libraries in the world. Rich history, collection of valuable manuscripts, incunabulas and other printed books make this library special. Although officially founded in 1450 in Vatican, by Pope Nicholas V., papal library and writings have a rich history dating back to VI. century. Pope Sixtus IV. played a major role in the development of the library, which provided the library with a separate space, librarians and bookbinders. Today, the library has a milion and a half books, more than 7,200 incunabulas and more than 70,000 manuscripts. One of the most important works of the Vatican Library is certainly the Vatican Codex (Codex Vaticanus), which contains a manuscript of the Bible written in Greek uncial dating from the first half of the IV. century and contains complete records of the Old and New Testaments. In addition to the Vatican Codex, the library also has the first edition of Gutenberg Bible. Until the 17th century, part of the library was the Vatican Secret Archive (Archivio Segreto Vaticano) which Pope Francis renamed to the Vatican Apostolic Archives. The archive contains documentary heritage valuable to the Catholic Church, but also various documents about Galileo Galilei, Henry VIII. and Martin Luther. Access to the library is limited due to the preservation of valuable books contained in it. The idea of digitizing the Vatican Library was launched in 2010 and was realizes in 2014. Today, a large number of Vatican Library materials have been digitized and made available online.