Burj Khalifa (Burj Dubai)

Burj Dubai (which in Arabic means "Dubai Tower") is a skyscraper located in the Business Bay district of Dubai and is the tallest man-made structure ever built. Its construction began on September 21, 2004 and as of September 26, 2008, Burj Dubai had reached a height of 707 m (2,320 ft).The final height of Burj Dubai is officially secret because of the competition between other under construction buildings. However some "rumors" says thasat the final height will be around 818 m (2,684 ft) with 162 floors.-->
The Burj Dubai Tower was officially opened on January 4, 2010. Its total height is 828 meters (2,717 feet), that means more than 300 meters heigher than Tai-Pei of Taiwan (508 meters / 1,667 feet). The Burj Dubai Tower have a total of 160 floors: 49 for offices, 61 for apartments and 18 reserved for the hotel. The total cost for its building should be around $4,1 billion.
On the official launch ceremony Burj Dubai have been renamed Burj Khalifa in honour of the United Arabs Emirates' President Sheikh Khalifa bin Zayed al Nahyan.
Current (2010) Records:
Tallest skyscraper to top of spire: 828 m (2,717 ft) (previously Taipei 101 - 509.2 m (1,671 ft))
Tallest structure ever built: 828 m (2,717 ft) (previously Warsaw radio mast - 646.38 m (2,121 ft))
Tallest extant structure: 828 m (2,717 ft) (previously KVLY-TV mast - 628.8 m (2,063 ft))
Tallest freestanding structure: 828 m (2,717 ft) (previously CN Tower - 553.3 m (1,815 ft))
Building with most floors: 160 (previously both 1 and 2 World Trade Center - 110)
World's highest elevator installation
World's fastest elevators at speed of 64 km/h (40 mph) or 18 m/s (59 ft/s) (previously Taipei 101 - 16.83 m/s)
Highest vertical concrete pumping (for a building): 606 m (1,988 ft) (previously Taipei 101 - 449.2 m (1,474 ft))
Highest vertical concrete pumping (for any construction): 606 m (1,988 ft) (previously Riva del Garda Hydroelectric Power Plant - 532 m (1,745 ft))
The first world's tallest structure in history to include residential space
Highest outdoor observation deck in the world
World's highest mosque (located on the 158th floor)
Elevator with the longest travel distance in the world
Tallest service elevator in the world
World's highest installation of an aluminium and glass façade, at a height of 512 m (1,680 ft)