Burj Khalifa - Today's Tallest structure

Burj Khalifa , formerly known as Burj Dubai, is a skyscraper in Dubai, U.A.E., and is currently the tallest structure ever built, at828 m (2,717 ft).

Tower Construction began on 21 September 2004, with the exterior of the structure completed on 1 October 2009. 

The building officially opened on 4 January 2010.

Current records

1. Tallest skyscraper to top of spire: 828 m (2,717 ft) - previously Taipei 101 – 509.2 m (1,671 ft)
2. Tallest structure ever built: 828 m (2,717 ft) (previously 646.38 m (2,121 ft)) Warsaw radio mast
3. Tallest extant structure: 828 m (2,717 ft) (previously KVLY-TV mast – 628.8 m (2,063 ft))
4. Tallest freestanding structure: 828 m (2,717 ft) (previously CN Tower – 553.3 m (1,815 ft))
5. Building with most floors: 160 (previously – 108 floors in Willis Tower)
6. World's highest elevator installation
7. 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)
8. Highest vertical concrete pumping (for a building): 606 m (1,988 ft)(previously Taipei 101 – 449.2 m (1,474 ft))
9. Highest vertical concrete pumping (for any construction): 606 m (1,988 ft)
10. The first in history to include residential space
11. Highest outdoor observation deck in the world (124th floor)
12. World's highest mosque (located on the 154th floor)
13. World's highest installation of an aluminium and glass façade, at a height of 512 m (1,680 ft)
14. World's highest swimming pool (76th floor)