Which is the top building in the world

[yards]

Im a architectural designer[ i used to read lot of news about big sky scrapers , i want to know whether BURJ is the tallest tower in the world. Is there any other building equal to that building. these are some of the information i captured from the internet about AL BURJ

Height to tip 1,050 m (3,445 ft) varies
Height to roof 850 m (2,789 ft) varies
Height to top floor 850 m (2,789 ft) varies
Floors 228
Total Built-up area 1,490,000 m² (16,038,200 sq ft)
Usable Space 492,000 m² (5,295,800 sq ft)

I want to know is there any other tower similar or heighter than AL BURJ.

[notjim]

it's all here:
http://en.wikipedia.org/wiki/Tallest_buildings

ps tallest!=top

[malec]

The tallest building which is actually a real project getting built and not some fanciful proposal that'll never see the light of day is the Burj Dubai. It has reached about 600m now and has another 200m to go, most of which is not actually occupiable space.