Ключевые слова: airport, architecture, background, blue, building, business, center, city, convenient, design, elevator, empty, escalator, escalators, financial, glass, inside, interior, lift, london, mall, metal, metro, modern, moving, nobody, office, perspective, public, shopping, stair, staircase, stairs, stairway, station, steel, subway, success, technology, transport, transportation, travel, underground, up, urban, way,