Admont Abbey is a Benedictine monastery located on the Enns River in the town of Admont, Austria. It is the oldest remaining monastery in Styria and contains the largest monastic library in the world. The abbey is known for its Baroque architecture, art, and manuscripts. [Source]

While the abbey itself was completed in 1074 the library (late Baroque) was not completed until 1776. It was commissioned by Abbot Matthäus Offner (reigned 1751-1779) and built by the Graz Master Builder Josef Hueber (1715-1787).

via The World’s Largest Monastery Library is in Austria and it’s Beautiful «TwistedSifter.