On the hillside above the old town, Porto Cathedral, known as La Sé, is the most important cathedral in Porto and resembles a fortress. Its construction began in the 12th century and it was remodelled in the 18th century in the Baroque style. It hosted the wedding of King John I to Princess Philippa of Lancaster and the baptism of Prince Henry the Navigator, their son. It has two towers and a granite façade. Inside, the decoration is crude, apart from the altar and its chapels, which are reminiscent of the Baroque style.
You can also enter the cloister from inside the cathedral, where the facades are decorated with earthenware depicting the life of the Virgin. Take time to admire the panoramic view over Porto and take a selfie in front of the entrance.