Ключевые слова: airport, architecture, background, building, city, construction, corridor, empty, entrance, escalator, exit, handrail, indoor, infrastructure, inside, interior, lift, mechanism, metal, metro, modern, motion, move, nobody, passenger, pedestrian, perspective, public, railing, shiny, stair, staircase, stairway, station, steel, subway, transport, transportation, travel, tunnel, underground, underpass, urban, walk, walkway, way,