Ключевые слова: architecture, attraction, boat, bridge, building, cathedral, church, city, cityscape, culture, district, dom, douro, downtown, euro, europe, european, gothic, heritage, historic, history, house, igreja, landmark, luis, night, oporto, palace, ponte, porto, portugal, portuguese, ribeira, river, se, serra, site, skyline, style, sunset, symbol, tour, tourism, town, tradition, travel, urban, world,