Biblioteca Joanina, part of The University of Coimbra General Library, Coimbra, Portugal. This Baroque library was built in the century during the reign of King João V (and named after him). It contains about 250 thousand volumes.
I love this stunning library at Trinity College in Dublin. I've strolled through it many times during my trips to Dublin. The Long Room a the Old Library. If you ever get to Dublin, don't miss this jaw dropping piece of architecture and history.
One of the Oldest, Largest, and Most Signficant Medieval Libraries The library in the Abbey of St. The library collection is the oldest in Switzerland, and is one of earliest and most important monastic libraries in the world