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
Foreign relations of Spain in 1817, that states that the winning countries are to ""endeavour with the mightiest conciliatory effort to return Olivenza/Olivença to Portuguese authority"". Thus, the border between the two countries in the region of Olivenza/Olivença should be as demarcated by the Treaty of Alcanizes of 1297. Spain interprets Article 105 as not being mandatory on demanding Spain to return Olivenza/Olivença to Portugal, thus not revoking the Treaty of Badajoz. Portugal has never made a formal claim to the territory after the Treaty of Vienna, but has equally never directly acknowledged the Spanish sovereignty over Olivenza/Olivença. Portugal continues to claim Olivenza/Olivença, asserting