Ключевые слова: april, architecture, attraction, boat, bridge, building, city, cityscape, culture, district, dom, douro, downtown, dramatic, duoro, europe, european, famous, gothic, hdr, heritage, historic, history, house, landmark, lighted, luis, night, old, oporto, panorama, ponte, porto, portugal, portuguese, ribeira, river, site, skyline, style, sunset, symbol, tour, tourism, town, tradition, travel, unesco, urban, world,