The tower of El Deán Monument · Cantalapiedra, Tierra de Peñaranda, Salamanca Image of Cantalapiedra, not of the place itself. The only surviving tower of the wall built to defend the eastern frontier of the Kingdom of León, it is constructed in rubble masonry with brick reinforcements at the corners. It owes its name to the deans of the cathedral of Salamanca. Photo: Cruccone (CC BY-SA 3.0 es) What to see and do in Cantalapiedra