Guangzhou International Finance Center (Guangzhou West Tower)Guangzhou International Finance Centre or Guangzhou West Tower, is a 103-storey, 438.6 m (1,439 ft) skyscraper at Zhujiang Avenue West in the Tianhe District of Guangzhou, Guangdong, China. It is the 15th tallest building in the world. It is a one half of Guangzhou Twin Towers.Construction of the building, designed by Wilkinson Eyre, broke ground in December 2005, and was completed in 2010. The building is used as a conference centre, hotel and office building. Floors 1 through 66 are used as offices, floors 67 and 68 are for mechanical equipment, floors 69 to 98 have a Four Seasons Hotel with the lobby being on the 70th floor, and floors 99 and 100 are used as an observation deck.The building was previously known as Guangzhou West Tower and had a related project, the proposed Guangzhou East Tower, which, at 475 m (1,558 ft), would have been even taller, though that project has been awarded to a different design by Kohn Pedersen Fox, the 530 m (1,740 ft) Chow Tai Fook Centre.The building was the winner of the RIBA 2012 Lubetkin Prize.