Portugal–Spain border NATO 2010 Lisbon summit and during Pope Francis's visit to Fátima in May 2017. Portugal's maritime borders, also known as the Exclusive economic zone of Portugal is currently disputed by Spain in the Savage Islands area, between Madeira and the Canary Islands. The main crossing point between Portugal and Spain is Vilar Formoso - Fuentes de Oñoro. Other important crossings are Caminha and Bragança to Galicia, Portalegre and Elvas to Badajoz, and Castro Marim and Vila Real de Santo António to Ayamonte. Bridges across the border include the Guadiana International Bridge and the Lower Guadiana International bridge. A zipline across
Spanish nationality law "not by origin", which implied that they had to renounce their previous nationality—Spanish nationals "by origin" cannot be deprived of their nationality, and therefore, these individuals can also retain their original nationality). By virtue of this law, if an individual, whose father or mother had been originally Spanish and born in Spain, and who had previously acquired Spanish nationality "not by origin" by option (art. 20) could request his or her nationality be changed to nationality "by origin", if he or she chose to do so. The period wherein the Spanish nationality could be acquired by the Law of Historical