Burj Khalifa known as Burj Dubai is the tallest building in the world measures over 829.84 meters (2,723 ft).
It's construction began on 21 September 2004 and completed in 1st October 2009 and was opened to the public in 4th January 2010.
The overall cost of the project was estimated at USD$ 1.5 billion.
ou can enjoy the stunning scenes of Dubai from the top of this building. Burj Khalifa has also got the world’s tallest restaurant situated on the 122nd floor at 442 meters (1350 ft) up in the sky.