Castillo de Moguer was renovated and enlarged in the 14th century. The oldest record document of castle dates from 1362, but it probably existed already in the Moorish age.
The castle was built of mud-based mortar gravel, clay and lime. It is of an imperfect square plan 44 by 45 metres in size, with four towers at the corners. A moat surrounded the castle, as evidenced by written records, but is not currently visible. Access to the castle was across the northwest side, now Santo Domingo Street, via a ramp. Each tower measures 9 by 9 metres and contains two chambers with a covered brick dome. The four towers were topped by battlements. A cellar dating to the 18th century, measures 22 by 10.5 metres and serves as the headquarters of the Tourist Office.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.