Construction has been underway on the world's tallest building, the Burj Dubai, for a while now. But developer Emaar Properties has announced that the building is going to be even taller than originally planned. How tall? They aren't telling. The final height of the Burj Dubai won't be revealed until it is finished in September 2009. Why the secrecy? Likely so that no one else will try to build one that is taller until the building officially opens. The tower, which at 2,036.6 feet is already the world's tallest structure, currently has 160 stories.

The tower is also upgrading and redesign the interior to make it as attractive as possible and to make room for technological advancements that have occurred between now and 2004 when some of the building's interiors were planned. Right now around 7,500 people are employed on-site at Burj Dubai. The cladding work is nearing completion and they are working on the infrastructure. When completed the tower will be home to residences, office suites an Armani Hotel and Armani Residences and observation deck on Level 124 which will offer visitors sky high views.