Peñafiel Castle is located in Peñafiel, Valladolid Province, Spain. The castle is more than 200 metres long and encloses an area about 35 m wide. Standing in the middle is a 34 m high three storey keep. Fernan Gonzalez began construction on the Peñafiel site in 947, as a frontier outpost in defense against the Arabs. A castle was built in 1013 by Sancho Garcia to protect the land. Several other members of the Spanish nobility added to the castle including Juan Manuel and Pedro Girón.