The castle of Valdemedina Monument · Endrinal, Guijuelo, Salamanca In the hamlet of Villar de Leche, on a rise next to the channel of the Alagón, stands what remains of the keep of a fortress built in the eighth century, taken by the Kingdom of León in the tenth and altered up to the thirteenth. Photo: Ramajero (CC BY-SA 4.0) What to see and do in Endrinal