Ключевые слова: aerial, aguas, amoreiras, ancient, antique, aqueduct, arch, architecture, attraction, bridge, building, canal, city, cityscape, construction, engineering, europe, european, free, heritage, historic, historical, history, hydraulics, industrial, landmark, landscape, lisboa, lisbon, livres, monument, old, outdoor, portugal, portuguese, reservoir, roman, sky, stone, structure, supply, technology, tourism, touristic, town, travel, urban, view, water,