What is the worlds second tallest structure?

Taipei 101 is the 2nd tallest structure in the world.
When Taipei 101 Vs Burj Dubai,
Taipei 101 is 518m and Burj Dubai is 818m.
When Taipei 101 Vs Petronas Twin Towers (Which lives in our country)
Taipei 101 is 518m and Petronas Twin Towers is 457m.
For more information,
Go to this website:
http://en.wikipedia.org/wiki/Taipei_101
Hope sure you know!


PS: A tower called Taipei 202 is proposed.