Portugal,[e] officially the Portuguese Republic,[f] is a country located on the Iberian Peninsula in Southwestern Europe, whose territory also includes the Macaronesian archipelagos of the Azores and Madeira. It features the westernmost point in continental Europe; its mainland west and south border with the North Atlantic Ocean; and in the north and east, the Portugal-Spain border, which constitutes the longest uninterrupted border line in the European Union. Its archipelagos form two autonomous regions with their own regional governments. On the mainland, the Alentejo region occupies the biggest area but is one of the least densely populated regions of Europe. Lisbon is the capital and largest city by population, a