The walls of Artajona is a medieval fortification. It is not a castle but an 11th century walled complex, it originally had fourteen crenellated towers, of which nine remain. The complex, located in the province of Pamplona (Navarra), protects the fortified church of San Saturnino, which was part of the complex’s defense system together with robust walls, buttresses, the watchtower, the parapet walk and dungeon. http://www.artajona.net/menu/the-fence-of-artajona