The construction of Don Álvaro de Luna castle was commissioned by the High Constable Ruy López Dávalos between the end of the 14th century and the beginning of the 15th century.There is very little left in the interior of the castle. The fires originating from the different wars have left, over time, only the walls of the building. In other periods it was used as a prison and cemetery, and today it is the municipal auditorium.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.