Portugal is located on the Iberian Peninsula in Southwestern Europe, bordered by Spain to the north and east and the Atlantic Ocean to the west and south. Its capital, Lisbon, is one of the oldest cities in Western Europe. Portugal's geography is divided by the Tagus River: the north is mountainous with a rainy climate, while the south (the Alentejo and Algarve) features rolling plains and a warmer, Mediterranean climate. Portugal also includes the Atlantic archipelagos of the Azores and Madeira, which are autonomous regions. Cabo da Roca, on the Portuguese mainland, is the westernmost point of continental Europe. Historically, Portugal was a leading maritime power during the Age of Discovery. The country is the world's largest producer of cork and is famous for its Port wine and Fado music. Its coastline is known for some of the world's largest surfable waves, particularly at Nazaré.