Palacio de los Cepeda is a fascinating and grand structure that has been a residence of some of the area's most important families. Set aside some time to view it for yourself.
You'll have sightseeing choices galore when staying in Osuna. Palacio de los Cepeda is a good place to begin here, but there are plenty of other worthwhile sights to visit. El Coto las Canteras Archaeological Site, Plaza de Toros, and La Encarnacion Monastery are near the historic stately house and will round out your day nicely.