Artifacts include El Incunable de Monterrey, the first book published in Galicia in 1494, Enrique de Arfe's processional cross, 13th-century enamels from Limoges, the so-called Treasure of San Rosendo and the oldest Christian tombstone in Galicia from Baños de Bande.
In the university library, which was established in 1797, there were more than 715,000 items, including 450 manuscripts, one of which was from the 10th century, and 140 incunables, of which one was a Gutenberg Bible.