The tallest structure and building in the world,the Burj Khalifa (formerly known as the Burj Dubai),is finally open,and wow..did it open with a bang! Standing at a staggering 828m,the building beats the next tallest structure in the world (a radio tower/mast) by a good 200 meters! The building is composed of 160 floors (another record),with elevators zipping you up and down at a record 64 km/h or 18m/s! I can’t wait to check out the view from the observation deck at floor 124 (highest outdoor observatory in the world).