The third-largest research library in Spain by num...

The third-largest research library in Spain by number of volumes, and the most beautiful. Getting into the reading rooms means registering as a reader, but more often than not the lobby is host to small temporary exhibitions. The staff by the lockers will wave you through if you say you have come to see an exhibition, or to ask about registering.

For researchers, the quietest corners of the BC are the rare book room ("reserva" and the end of the third nave, at the far end of this U-shaped structure.