The Castle of Peñaranda de Duero is a great fortress that clearly dominates the hamlet, although the first defenses of Peñaranda could be raised simultaneously to its repopulation. Written data of the Castle take us to the year 1100, but it is in the XVI century when the Zúñiga family gives it the current aspect.
Inside the visitor will find in the Tower of Homage, a center of interpretation of the border castles, and you can see, from its viewpoint, one of the most beautiful villages on the banks of the Douro.