The castle once powerful and important lost its position many centuries ago and, deprived of its military status, served as a prison and a court of justice. By the early 20th century it was apparently useless and it was abandoned. Its current state is the result of a fairly recent reconstruction which aimed, quite successfully, at producing a picturesque ruin. You can enjoy a walk among stone walls and take pictures of the Duero valley and the city below. The castle gardens are used as an open air gallery of modern sculptures.