The castle of Doña Urraca Monument · Fermoselle, Sayago, Zamora Image of Fermoselle, not of the place itself. In ruins, it crowns the highest point of the town looking out over the Duero; beneath its walls extends a quarter declared a historic-artistic site on 24 October 1974, at the confluence of the Duero with the Tormes. Photo: arou (CC BY-SA 2.5) What to see and do in Fermoselle