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Incredible Footage From The Top Of The World's Tallest Building The Burj Khalifa is currently the tallest structure in the world. BURJ KHALIFA,DUBAI- The Building is 829.84 Meters High (2,723ft) The Observation Deck is on the 124th Floor or 442m (1,450ft) aboue the Ground Dubai has a rich collection of buildings and structures of various architectural styles. Many modern interpretations of Islamic architecture can be found here, due to a boom in construction and architectural innovation in the Arab World in general, and in Dubai in particular, supported not only by top Arab or international architectural and engineering design firms such as Al Hashemi and Aedas, but also by top firms of New York and Chicago. As a result of this boom, modern Islamic -- and world -- architecture has literally been taken to new levels in skyscraper building design and technology. Dubai now boasts more completed or topped-out skyscrapers higher than 2/3 km, 1/3 km, or 1/4 km than any other city. A culmination point was reached in 2010 with the completion of the Burj Khalifa (Khalifa Tower), now by far the world's tallest building at 829.84 m (2,722.57 ft). The Burj Khalifa's design is derived from the patterning systems embodied in Islamic architecture, with the triple-lobed footprint of the building based on an abstracted version of the desert flower hymenocallis which is native to the Dubai region. The completion of the Khalifa Tower, following the construction boom that began in the 1980s, accelerated in the 1990s, and took on a rapid pace of construction unparalled in modern human history during the decade of the 2000s, leaving Dubai with the world's tallest skyline as of 4 January 2010. Tallest structure: 818 m (2,684 ft) (previously KVLY-TV mast - 628.8 m (2,063 ft)) Tallest freestanding structure: 818 m (2,684 ft) (previously CN Tower - 553.3 m (1,815 ft)) Building with most floors: 160 (previously World Trade Center - 110) World's highest elevator installation Worlds fastest elevators at speed of 64 km/h or 18 m/s (59 ft/s)[23] (previously Taipei 101 -- 16.83 m/s) Highest vertical concrete pumping (for a building): 601 m (1,972 ft) (previously Taipei 101 - 449.2 m (1,474 ft)) Highest vertical concrete pumping (for any construction): 601 m (1,972 ft)[24] (previously Riva del Garda Hydroelectric Power Plant - 532 m (1,745 ft) The first world's tallest structure in history to include residential space Note: Additional records for tallest skyscraper are considered unofficial. On 20 July 2007, the head of the Council on Tall Buildings and Urban Habitat (CTBUH), Antony Wood, said "We will not classify it as a building until it is complete, clad and at least partially open for business to avoid things like the Ryungyong [sic] project. Taipei 101 is thus officially the world's tallest until that happens." Timeline 21 September 2004: Emaar contractors begin construction February 2007: Surpasses the Sears Tower (since renamed to the Willis Tower) as the building with the most floors. 13 May 2007: Sets record for vertical concrete pumping on any building at 452 m (1,483 ft), surpassing the 449.2 m (1,474 ft) to which concrete was pumped during the construction of Taipei 101. 21 July 2007: Surpasses Taipei 101, whose height of 509.2 m (1,671 ft) made it the world's tallest building. 12 August 2007: Surpasses the Sears Tower (Willis Tower) antenna, which stands 527.3 m (1,730 ft). 3 September 2007: Becomes the second-tallest freestanding structure, surpassing the 540 m (1,772 ft) Ostankino Tower in Moscow. 12 September 2007: At 555.3 m (1,822 ft), becomes the world's tallest freestanding structure, surpassing the CN Tower in Toronto. 7 April 2008: At 629 m (2,064 ft), surpasses the KVLY-TV Mast to become the tallest man-made structure. 17 June 2008: Emaar announces that Burj Dubai's height is over 636 m (2,087 ft) and that its final height will not be given until it is completed in September 2009. 1 September 2008: Height tops 688 m (2,257 ft), making it the tallest man-made structure ever built, surpassing the previous record-holder, the Warsaw Radio Mast in Konstantynów, Poland. 17 January 2009: Topped out at 818 m (2,684 ft). 1 October 2009: Emaar announces that the exterior of the building is completed. The total budget for the Burj Dubai project is about US$4.1 billion, and for the entire new "Downtown Dubai", US$20 billion Floor layout: 160-206 Mechanical 156-159 Transmission 155 Mechanical 139-154 Office 136-138 Mechanical 125-135 Office 124 Observatory 111-123 Office 109-110 Mechanical 76-108 Residential 73-75 Mechanical 43-72 Residential 40-42 Mechanical 19-39 Hotel 17-18 Mechanical 5-16 Hotel 4 Hotel, Mechanical 3 Hotel, restaurant 2 Hotel, lobby 1 Hotel, lobby, restaurant Concourse Restaurant, lobby B1-B2 Parking, Mechanical