Ключевые слова: abstract, airport, architecture, background, black, blue, blur, building, business, center, city, design, empty, escalator, fast, floor, glass, hall, hallway, indoors, inside, interior, light, mall, metal, modern, move, nobody, office, people, perspective, reflection, roof, speed, stair, staircase, stairway, station, steel, step, striped, terminal, transportation, tube, tunnel, up, urban, walk, walkway, white,