This fortification was acquired by the Basque painter Ignacio Zuloaga in 1926 and is currently home to his heirs. It is open from Wednesday to Sunday and there is usually a white sign at the entrance indicating opening hours. 

After being held captive in the fortresses of Villalba de los Alcores, Ampudia, Villalpando, Berlanga and Castilnovo, two children of the French king Francis I were imprisoned in the castle of Pedraza: the heir to the throne, the Dauphin Francis, and his brother Henry, Duke of Orleans. 

Source: Book “TWO FRENCH CHILD PRINCES CAPTIVE IN CASTILE 1526-1530”

In winter (from November to April approximately) opening hours are from 11:00 to 14:00 and 16:00 to 19:00, and in summer hours are the same in the morning and shifted by an hour to 17:00-20:00 in the afternoon. Inside you can see the bailey, cistern and Museum of paintings by Zuloaga (the residential part cannot be visited). 

Admission is €7 per person and the duration of the visit is 40 minutes. Opening hours and group reservations can be confirmed by calling 921 50 98 25. On the first Friday of each month there is a guided tour of the painter's studio and bedroom in addition to the visit to the museum. The price is 15€ per person.