Ключевые слова: abstract, adult, architecture, arrival, ascending, background, boots, business, city, construction, corridor, departure, down, escalator, flight, gate, human, legs, life, light, male, man, metal, modern, movement, people, person, shoes, shopping center, sneakers, stair, staircase, stairway, standing, station, steel, step, subway, texture, top, top view, train, transport, transportation, traveler, trip, urban, walk, walking, white,