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Photo: Laszlo Daroczy from Miskolc, Hungary, CC BY 2.0 via Wikimedia Commons
This Romanesque cathedral was built in the 13th century. Later on Baroque alterations were made in the 17th and 18th century. The cathedral is on top of a hill from where you also have great views over the city and the river.
The Porto Cathedral is a Roman Catholic church located in the historical centre of the city of Porto, Portugal. It is one of the city's oldest monuments and one of the most important local Romanesque monuments.
© OpenStreetMap contributors
Riverfront
The part of the city near the river, which is also a good place to start visiting the World Heritage area; to the other side of the river you will see the Ribeira de Gaia, a similar area from the city of Vila Nova de Gaia (the two are only separated by the river) and where you could find the Port Wine Cellars.
A small exhibition about Port wine and its certification process. Samples of a small variety of Port wines can be bought. Guided tastings and tours to the laboratories can be arranged.
Porto's main theatre and opera production company and venue. There are also guided tours (€5/person) for access to the stage, rehearsal room, dressing rooms and the technical area (if they are not used during the time of the tour).
Stock Exchange Palace
It was built in the 19th century on the grounds of the destroyed old cloisters of the adjacent São Francisco church. It also contains the most impressive Arab room in the country. There is also a Port wine tasting room.
Clerics' Tower
Panoramic views from this baroque tower. 226 steps to the top. It is best to get there early since there is not a lot of space on the viewing platform. You might even have to wait for some time before you are allowed to climb up the stairs.