<P> Since 2010 , Burj Khalifa has been the tallest building by any criteria . It has the highest architectural element , tip and occupied floor , and is indeed the tallest structure of any kind ever built , surpassing the ( now destroyed ) 646.38 metres ( 2,120.7 ft ) Warsaw Radio Mast . </P>
tallest building in the world of all time
Burj Khalifa