Ключевые слова: architecture, background, bridge, buildings, business, city, cityscape, clear sky, construction, dam lake, daytime, design, district, engineering, ikawa line, industrial, infrastructure, japan, landmark, landscape, local line, metal, modern, nagashima dam, nature, oi river, oigawa railway, old, outdoor, outdoors, railroad, railway, railway bridge, river, road, silhouette, sky, steel, steel bridge, steel truss, structure, tourism, train, transport, transportation, travel, truss, truss bridge, urban, valley,