Ключевые слова: abstract, arch, architecture, attraction, below, beneath, bridge, city, construction, dom, engineering, europe, famous, floor, form, heritage, historic, historical, infrastructure, iron, landmark, lane, lower, luis, luiz, metal, monument, old, oporto, perspective, point, porto, portugal, portuguese, road, shape, sight, sights, steel, street, structure, truss, under, unique, up, vanishing,