Ключевые слова: abstract, airport, architecture, background, building, business, center, city, concept, design, down, elevator, escalator, floor, glass, indoor, inside, interior, leg, lifestyle, lift, light, mall, metal, modern, motion, move, office, old, pattern, people, perspective, shop, stair, staircase, stairway, steel, subway, technology, texture, top, transport, transportation, travel, underground, up, urban, vertical, view, walkway,