Ключевые слова: architecture, building, building exterior, built structure, cental, city, cityscape, climbing, concrete, construction, design, downtown, empty, escalator, exterior, foot bridge, hk, hong kong, industrial, interior, iron, ladder, low angle view, metal, modern, no people, sky, skyline, skyscraper, staircase, stairs, steel, steps, steps and staircases, structure, tower, tower block, travel destinations, urban area,