05.01.2010
The world s tallest building has been surprisingly opened with a dramatic fireworks ceremony in the Gulf emirate of Dubai on January 4th.

A dramatic fireworks and lights show took place around the tower while a screen displayed its exact height, which had previously been kept secret.
The tallest man-made structure. was revealed to be 828m (2,716ft) high, its spire can been seen 95km (60 miles) away.
Clad in 28,000 glass panels, the tower has 160 floors and more than 500,000 sq m of space for offices and flats.
The tower also lays claim to the highest occupied floor, the tallest service lift, and the world's highest observation deck - on the 124th floor.
The secrecy kept opening ceremony was attended by some 6,000 guests.
"We weren't sure how high we could go," said Bill Baker of Skidmore, Owings & Merrill, the building's structural engineer. "It was kind of an exploration... a learning experience."