Ключевые слова: ancient, architecture, background, bridge, building, built, cement, construction, control, danger, direction, end, engineering, exit, forest, frame, geometry, ground, industry, iron, journey, landscape, life, light, line, long, metal, mist, nature, obstacle, old, parallel, rail, railroad, railway, river, sky, steel, structure, sunset, track, train, transport, transportation, transports, travel, trip, tunnel, water, way,