Skidmore, Owings and Merrill designed the tower, led by Adrian Smith, and acted as structural engineer. Shanghai Construction Group was the main contractor. Groundbreaking was on May 29, 2004, construction started on February 27, 2005, and the tower opened on December 18, 2010. The cost was 5 billion yuan. The article gives completion as a range, from January 30 to April 8, 2010.
The article says the triangular form responds to views of nearby mountains, a lake and historic buildings, with stepped massing and a spire at the top. It names no style. The lead gives the height as 1,480 feet (450 m), the infobox 1,486 feet (453 m) architectural and 1,477 feet (450.3 m) to the roof. It has 89 stories, 52 elevators and 1,480,350 square feet (137,529 m²) of floor area.
Retail and offices are at the base and a hotel above. A public observatory and restaurants occupy the top, with the observatory at 1,250 feet (381 m).
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