Ключевые слова: architecture, arrival, berlin, building, business, center, central, city, corridor, crowd, departure, duty, elevator, escalator, floor, free, germany, glass, hall, indoor, indoors, inside, interior, light, mall, metal, metro, modern, passenger, pedestrian, people, perspective, shop, shopping, shops, stair, staircase, station, steel, store, structure, subway, technology, terminal, tourist, tourists, urban, window, worker, workers,