There are also well-known theological libraries located internationally. The International Theological Institute ITI Library in Austria houses around 25,000 volumes in philosophy and theology. One of the most famous international theological libraries is the Vatican Library founded in 1475, which contains not only collections on theology and religion but on history, law, philosophy, and science as well. Theological libraries are available around the world for a variety of research purposes. They contain both contemporary and historical collections to promote the understanding of religious communities.