The Palacio del Duque de Riánsares is the neoclassical urban palace built in the 1840s for Agustín Muñoz, the morganatic husband of Spain's regent queen María Cristina, who was made Duke of Riánsares as part of the long, scandalous attempt to legitimize their marriage. The façade is a calm composition of three storeys with a balcony of wrought iron over the main doorway.
The building now houses the town's cultural offices and a small exhibition space. It is not always open, but the exterior is the main attraction in any case and is a few minutes' walk from the Plaza Mayor.