Max. Capacity: 170 individuals (depends on the event and furniture used). For the use of this room require prior permission.

The grand staircase of the main lobby provides access to a special chamber, under the fronton of the building, which is the venue of the BNE Royal Board. Decorated with libraries that belonged to the Godoy Palace and the paintings that Meléndez, painter of the court of Felipe V, made for the first seat of the Royal Public Library. This room allows all kinds of events.