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Completed in 2010 , the Burj Khalifa ( otherwise known as the Burj Dubai ) stands 2,723 ft tall and has retained its title of world ’ s tallest building for eight years . It is likely to retain that title until the 3,000-plus ft tall Jeddah tower , which began construction in 2013 , is completed . The Burj Khalifa contains 163 floors above ground , with only one below . These floors are divided between office , retail , and residential space , with 900 apartments and 304 hotel rooms . The tower was also designed by Skidmore , Owings & Merrill LLP . Unexpectedly , the Burj Khalifa is tied with the Lotte World Tower in Seoul for the smallest number of elevators in the top 10 ,

with a mere 58 cars travelling 10 m / s , less than half the speed of those

in the Shanghai tower . www . constructionglobal . com