Located in the old medieval wall is a great example of the plateresque style, of great ornamental profusion. The building has three floors and is constructed in ashlar masonry stone, especially emphasising its two facades (one 16th century and another 18th) and the 15th century Mudejar gallery with interlaced stars and flowers, unique in La Rioja.
In the entrance, as outstanding elements of its architecture, we find bolstered jambs, floral motifs and angels in the voussoirs of the threshold.
It is currently undergoing restoration and in the future will house the new tourism office and the city’s municipal library.