Ключевые слова: airport, architecture, background, building, business, center, city, design, down, electric, elevator, empty, escalator, floor, glass, indoor, inside, interior, isolated, light, mall, metal, metro, modern, motion, move, moving, nobody, office, people, perspective, platform, public, shopping, stair, staircase, stairway, station, steel, step, subway, train, transport, transportation, travel, underground, up, urban, vertical, way,