Ключевые слова: architecture, building, cathedral, center, church, city, cityscape, culture, day, destination, douro, downtown, europe, european, exterior, facade, famous, historic, historical, landmark, old, old town, oporto, picturesque, place, port, porto, portugal, portuguese, river, se do porto, site, tourism, tower, town, travel, unesco, urban, vertical, view, world heritage site, world locations,