Dome

Detail, top of tower showing decorative cladding and a 102 m (335 ft) tall tower mast; A 78-storey, 374 m (1,227 ft) skyscraper; currently (2013) the third tallest tower in the city after 2 IFC in Central and the ICC in West Kowloon. Central Plaza was also the tallest reinforced concrete building in the world, until it was surpassed by CITIC Plaza, Guangzhou. The building uses a triangular floor plan, which provides 20% more of the office area to enjoy the harbor view as compared with the square or rectangular shaped buildings. From an architectural point of view, this arrangement could provide better floor area utilization, offering an internal column-free office area. Source: Wikipedia; http://en.wikipedia.org/wiki/Main_Page (accessed 7/17/2013)