Though it's the second-largest city in Portugal, Porto is still relatively small. The city covers about 16 square miles of land, with the Douro River running along its southern edge sandwiched ...

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 ...