Ключевые слова: airport, architecture, background, building, business, center, city, design, down, electric, elevator, empty, escalator, escalators, floor, indoor, interior, light, line, mall, metal, metro, modern, move, people, perspective, platform, public, shopping, shopping center, side, stainless, staircase, stairs, stairway, station, steel, step, subway, technology, transport, transportation, travel, underground, up, urban, view, way, yellow,