The castle of Valencia de Alcantara is located in the highest point of this town. It was built during the 13th century. It's a free access castle nowadays, although it' partly ruined. It's a spanish National Monument since April 22nd 1949.
Accessibility: Full access
Condition: Partly ruined
http://img.groundspeak.com/waymarking/large/353e351d-43af-41c3-ad90-f817c4cc63ff.JPG