Dome

Overall view; At 258 metres (846 ft) in height it is the second tallest tower in the city after the Central Radio & TV Tower, and the fourth-tallest structure in the city. Its design, with four smaller circular floors at different heights and positions below a larger top floor, is meant to echo the Olympic rings. Construction began in 2008, to coincide with that year's Summer Olympics; it was completed and opened in 2014. It is used strictly for observation, although a revolving restaurant is planned. Design was by Cui Kai and Li Cundong of the Chinese Architecture Design and Research Group (CARDEG). Zhao Wenbin, another architect at the firm, designed the landscaping at the towers' base. Source: Wikipedia; http://en.wikipedia.org/wiki/Main_Page (accessed 8/29/2015)