Ключевые слова: architecture, attraction, beautiful, bridge, building, city, cityscape, destination, dom, douro, downtown, dusk, europe, european, evening, famous, heritage, historic, historical, history, landmark, landscape, luis, luiz, night, old, oporto, ponte, porto, portugal, portuguese, river, riverside, scenery, sightseeing, skyline, sunset, tour, tourism, tourist, town, traditional, traffic, transport, travel, twilight, unesco, urban, view, water,