Ключевые слова: airport, architecture, background, building, business, city, concept, convenience, design, down, electric, empty, entrance, escalator, floor, glass, handrail, illustration, indoor, interior, isolated, ladder, lift, line, mall, metal, metallic, metro, modern, move, new, nobody, people, perspective, platform, shopping, stair, staircase, stairs, stairway, station, steel, subway, transport, transportation, travel, underground, up, urban, view,