Porto, the second city of Portugal after the capital Lisbon, is known for its port houses and the authentic district of Ribeira. However, Porto offers many more highlights, from the old town full of cultural sights to the beautiful surroundings of the Douro Valley where you can learn how the fine Portuguese wines are made. Surprisingly, the bustling Porto remains an undiscovered city, but the varied selection of attractions and activities will captivate visitors of all ages.