Porto, Portugal's second-largest city, is famous for its picturesque riverfront, the Ribeira district, and its production of port wine. Situated along the Douro River, Porto's historic center is a UNESCO World Heritage site, characterized by colorful buildings, medieval streets, and notable landmarks like the Dom Luis I Bridge and the Clerigos Tower. The city also boasts a thriving arts scene, excellent restaurants, and a range of cultural festivals.
