Cathedral, City Porto (Oporto) at | Stock PhotoCathedral, City Porto (Oporto) at Rio Douro. The old town is listed as UNESCO world heritage. Portugal, EuropeImage id: 746-89060architecturebridgecatholicchurchcityscapedawndom luisdouroheritagehorizontalmuseumold townoportoportoportugalportuguesereligionreligiousreligiuosreliogiousscenescenicsitetypicalunescoworld heritage sitewrought iron
