Avenida de Dom Carlos I at the mouth of the river Douro in Porto. This area is called Foz, which means river mouth and is a popular spot for promenading. Posted by Travel in Portugal on Sat, 21/12/2013 - 21:18 × Related images Torre dos Clérigos detail Ornate Shop Doorway - Porto Rua de Miguel Bombarda paving The Cube - Praca da Ribeira - Porto Clerigos Church Interior The River Douro Valley