Porto Cathedral, also known as Sé do Porto, is a prominent Romanesque church located in the historic center of Porto, Portugal. Construction began in the 12th century, and it features a mix of architectural styles, including Gothic and Baroque elements. The cathedral is known for its impressive façade, beautiful rose window, and stunning views of the city. Inside, visitors can explore the ornate altars, chapels, and a cloister adorned with traditional azulejos (decorative ceramic tiles). The cathedral is an important religious site and a popular tourist attraction, reflecting the rich history and culture of Porto.