La red de búnkeres construida en el siglo XX entre la bahía de Cádiz y la desembocadura del Guadalquivir

The Andalusian Defensive Architecture Plan (PADA) justifies the legal protection of all Andalusian defensive architecture based on the historical condition of the region as a border of kingdoms and civilizations. It supports by using the Decree of April 22, 1949 on the protection of Spanish castles; to the subsequent Law 16/1985 on Spanish Historical Heritage, which declared Bien de Interés Cultural the assets included in the Decree of 1949; and extending the term “castle” to the more generic of “defensive architecture” or “military architecture”.