One of the most spectacular libraries in the world is at the Strahov Monastery in Prague. While it is a bit off the beaten path for most tourists, it really is a must-see.
Over 125,000 classic and rare books fill floor-to-ceiling bookshelves at the monastery, which sits on a hill.
There are two halls. The Theological Hall dates from the 1600s and features ornate, 18th-century Baroque frescoes on the ceiling. The Philosophical Hall (pictured) is truly spectacular - an 18th century creation built in the Classic style that features Greek frescoes and opulently carved wooden bookcases with golden accents.
On the grounds of the monastery are also The Church of Saint Roch, an art gallery and a brewery with the best sweeping views of Prague - truly a wonderful, enchanting way to spend a beautiful afternoon.