Another one for the top 10 tallest buildings (not including towers) in the world (as of right now),
Zifeng Tower in Nanjing, Jiangsu, China!
This one took a lot of researching to get the reference material since it's not a popular one. I'm not sure why, it's a fantastic structure! The main issue was finding reference material for the overall shape and details on the roofs. I sort of fudged those since the only material I could find were satellite views in Google Earth. But much like Shanghai Tower and the Jin Mao Tower, I had to resort to China's version of Google Maps for street views to get the right details on the ground level as well as on some of the sides of the building.
I'm going to search out some cool shorter structures (200-400m) next, including the request for Key Tower.