Ключевые слова: architecture, bell, blue, building, castelo, church, city, cityscape, clergy, clerigos, clock, close, construction, cultural, culture, douro, downtown, europe, european, famous, fortification, gothic, heritage, historic, historical, history, hyperlapse, igreja, landmark, nasoni, old, oporto, porto, portugal, portuguese, sightseeing, site, symbol, tall, timelapse, top, torre, tower, town, travel, unesco, urban, vintage, world,