| Zifeng Tower | |
| Native Name: | 紫峰大厦 |
| Native Name Lang: | zh-hans |
| Location: | 1 Zhongyang Road Gulou District, Nanjing, Jiangsu |
| Opening: | December 18, 2010[1] |
| Building Type: | Mixed use |
| Cost: | 5 billion RMB |
| Groundbreaking Date: | May 29, 2004 |
| Start Date: | February 27, 2005 |
| Completion Date: | January 30, 2010 - April 8, 2010 |
| Architectural: | 450m (1,480feet)[2] |
| Roof: | 381m (1,250feet) |
| Top Floor: | 316.6m (1,038.7feet) |
| Observatory: | 271.8m (891.7feet) |
| Floor Count: | 66[3] |
| Floor Area: | 1480350ft2 |
| Elevator Count: | 54 |
| Parking: | 1200 |
| Main Contractor: | Shanghai Construction Group |
| Architect: | Adrian Smith at SOM |
| Structural Engineer: | Skidmore, Owings and Merrill |
| Order: | st |
| T: | 紫峰大廈 |
| P: | Zǐfēng Dàshà |
| L: | Purple Peak High-rise |
| Also Known As: | Greenland Center/Square-Zifeng Tower |
| S2: | 绿地中心/广场·紫峰大厦 |
| T2: | 綠地中心/廣場·紫峰大廈 |
| P2: | Lǜdì Zhōngxīn/Guǎngchǎng-Zǐfēng Dàshà |
| Altname3: | Nanjing Greenland Financial Center |
| S3: | 南京绿地金融中心 |
| T3: | 南京綠地金融中心 |
| P3: | Nánjīng Lǜdì Jīnróng Zhōngxīn |
Zifeng Tower (Greenland Center-Zifeng Tower or Greenland Square Zifeng Tower, formerly Nanjing Greenland Financial Center)[4] [5] is a 450adj=onNaNadj=on supertall skyscraper (special class of skyscraper) in Nanjing, Jiangsu. The 66-story building completed in 2010 comprises retail and office. Floors 49–71 feature a hotel, numerous restaurants, and a public observatory. The tower's stepping is functional; office, hotel, and retail are located above grade, while the restaurants and the public observatory are housed at the top of the tower. The building is currently the tallest in Nanjing and Jiangsu province, the eleventh tallest in China and the twentieth tallest in the world.
Architectural firm Skidmore, Owings and Merrill designed the building, led by Adrian Smith.[6] [7] The Tower occupies an area of 18,721 square meters. The Nanjing Greenland InterContinental Hotel is located within the tower.