Montuenga Castle in Soria, Spain forms part of the defensive line of the Jalón River set in a natural passage between the plateau and strategic basin of the Ebro. The area was subject to disputes, notable during the Castilian Civil War.
The castle is perched on a high hill, steep and long, from which it dominates the town of Montuenga de Soria. The remains of the building, two polygonal towers at each end, are joined by walls.References:
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.