Stock photography, photos: Oporto Portugal Stock photos of Oporto and the River Duoro and City with barges that were used to carry port down the river before shipping. Photograph: © Peter Phipp / Travelshots Click for a larger image and more information Keywords associated with this stock photo: oporto, porto, barges, city, river, duoro, 230907, adverts, names, advertising, branding, town, barrel, sails, city,portugal,eec,europe,european,city