Portugal–Spain border the border exists between Sanlucar de Guadiana in Spain and Alcoutim in Portugal; it is the first and currently only zip line over an international border. Portugal–Spain border The Portugal–Spain border is the international boundary between Portugal and Spain. Referred to as "la Raya" in Spanish and "A Raia" in Portuguese (the stripe), the current demarcation is almost identical to that defined in 1297 by the Treaty of Alcañices. It is one of the oldest borders in the world. The Portugal–Spain border is 1,214 km (754 miles) long and considered the longest uninterrupted border within the European Union. The border
Border guard The agency considers itself a direct successor of the Soviet Border Troops, and regularly celebrates the anniversary of the founding of the latter (May 28, 1918). This annual event, known as the Border Guards Day, is celebrated every year by the guards in active service as well as former servicemen in Moscow and throughout the country. Future world champion and Olympic sport shooter Boris Polak served as a border guard in the Red Army on a mountain top near China, attaining the rank of Colonel. As an island, Singapore is surrounded by water and does not share land borders with