See Porto from a new perspective, learning about its history, architecture, and culture from a local guide. Discover Porto, also known as Oporto, one of the largest cities in Portugal. Learn about its long history, while admiring its quaint streets, historic palaces, ancient cathedrals, and architecturally stunning buildings. Visit some of Porto's most popular attractions, such as the bell tower of the Clérigos Church, one of the most noticeable sights in the city, whose construction began in 1732. Gaze at the Dom Luís I Bridge, while learning about its history, from its construction in the 1880s to facts about its creators. Be led through the city by a knowledgable guide, learning how the city of Porto got its name, and why the city is nicknamed "Invicta".