Clementinum

The Baroque Library Hall of the Clementinum in Prague, photographed in 2024, looking down its length past an old globe. Kilián Ignác Dienzenhofer built the hall in 1722, and Jan Hiebl's ceiling frescoes on the theme of science and art run the length of its vault. Old globes stand down the center of the room, and the shelves hold about 27,000 volumes, mostly theology. Plan around the rule: visitors see the hall on a guided tour but may not walk into it.