Zifeng Tower vs Northeast Asia Trade 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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<p>The Posco Tower-Songdo or Northeast Asia Trade Tower (Korean: ?????-??) is a skyscraper at Songdo International City, the world's most expensive private real estate project in the Incheon Free Economic Zone, South Korea. </p>The 305-metre (1,001 feet ) building is now South Korea's fourth tallest, and has 68 flooring. It surpassed the previous record-holder, Samsung Tower Palace 3 -- Tower G in Seoul, when it. Although completed in 2011, the completion of its interior was postponed due to financial complications during a recession.The construction was intended to be a landmark of the Songdo International Business District that was assembled on unused land along the waterfront near Incheon. It includes 19 floors of class A office space, South Korea's tallest observatory on a luxury resort, the 65th-floor residences, and retail shops. The column-free flooring include an office lobby at ground level with Vermont slate stone walls and French limestone flooring.

Source: Wikipedia