Zifeng Tower (Greenland Center-Zifeng Tower or Greenland Square Zifeng Tower, formerly Nanjing Greenland Financial Center) is a 450-metre (1,480 ft) supertall skyscraper in Nanjing, Jiangsu province, China. The 89-storey building completed in 2010 comprises retail and office space in the lower section. The floors near the top feature a hotel, numerous restaurants, and a public observatory. The tower’s stepping is functional, helping separate these sections. The building is currently the tallest in Nanjing and Jiangsu province, the sixth tallest in China and the 13th tallest in the world.
Architectural firm Skidmore, Owings and Merrill designed the building, led by Adrian Smith. The Tower occupies an area of 18,721 square metres. The Nanjing Greenland InterContinental Hotel is located within the tower.(Wikipedia)