Zifeng Tower vs Princess Tower

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Zifeng Tower (Greenland Center-Zifeng Tower or Greenland Square Zifeng Tower, previously Nanjing Greenland Financial Center) is a 450-meter (1,480 feet ) supertall skyscraper (special class of skyscraper) in Nanjing, Jiangsu. The 89-story building finished in 2010 includes office and retail space up to floor 41. Floors 49-71 feature a hotel, a lot of restaurants, and a public observatory on the 72 floor. The tower's stepping is practical, helping to separate those sections.

The building is currently the tallest in Nanjing and Jiangsu province, the eleventh tallest in China and the twentieth tallest on earth. Architectural firm Skidmore, Owings and Merrill designed the building, headed by Adrian Smith. The Tower occupies an area of 18,721 square meters. The Nanjing Greenland InterContinental Hotel is located within the tower.

Source: Wikipedia

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The Princess Tower (Arabic: ??? ????????) is a 101-story, 413.4 m (1,356 feet ) tall residential-only skyscraper located in the Marina district of Dubai, UAE. Princess Tower is currently the third largest building in Dubai, after the Burj Khalifa and the Marina 101 and the 29th tallest building in the world. Princess Tower was the tallest residential building in the world from 2012 to 2015, when it was overtaken by 432 Park Avenue in New York City.

Source: Wikipedia