Admont Abbey Library, Monastic library in Admont, Austria.

The Admont Abbey Library is a Baroque hall 70 m long, 14 m wide and about 13 m high, the largest monastic book room in the world. Josef Hueber's design, built 1774–1776, covers the space with seven domes and lights it through 48 windows, so no artificial light was ever added. White-and-gold bookcases line the walls; the hall holds about 70,000 volumes of the abbey's 200,000.

The Benedictine monastery was established around 1074, and the Baroque library was built between 1774 and 1776 as a major renovation. This library was created to house the growing collection and support the scholarly work of the monks.

The ceiling frescoes were painted in 1776 by Bartolomeo Altomonte and show the stages of human knowledge rising to divine revelation in the central dome. Beneath them the shelves hold Bibles and Church Fathers, theology in the north hall and secular sciences in the south. The sculptor Josef Thaddäus Stammel carved the Four Last Things in the central room.

The library hall is reached through the abbey museum, and the 70-metre-long room is entered at its northern end, where the theological books stand; the secular sciences fill the southern section. The 48 windows provide all the light, as no artificial lighting was ever added, so the hall is dimmest on overcast days. The manuscripts and incunabula are kept in a separate security archive and shown in rotating annual exhibitions.

The four wooden figures in the central dome are the Four Last Things carved by Josef Thaddäus Stammel (1695–1765). They were made years before the library was built, so they still follow Baroque devotional art rather than the Enlightenment programme of architect Josef Hueber and painter Bartolomeo Altomonte.