Though it's the second-largest city in Portugal ... Meanwhile, Ribeira's townhouses and storefronts boast multi-colored facades and overlook the riverfront square, Praça da Ribeira, where ...

The Cais da Ribeira, a riverfront promenade along the Douro in the vicinity of the Dom Luis I Bridge, is considered one of the liveliest parts of town. During the day, it's an ideal spot to see ...