Official Portal of Tourism. Junta de Castilla y Leon

The structure, with a square ground plan and solid round cubes standing out on the corners, is not very elevated and was designed for artillery purposes. The hillock itself and the rubble were used to even the inside of the fortress and create today's platform. The same system was planned for the castle in Berlanga, but it was never carried out.

Probably one of the most advance castles of its time. In the 15th century, the village of Grajal is taken over by the Vega family. One descendant of this family, Hernando, began to build the present castle in the early 16th century, on the remains of a previous one. It was finished by his don Juan de Vega y Acuña, Count of Grajal.