world's tallest - burj khalifa

activity arab architecture biggest building built burj business cityscape district downtown dramatic dubai east eastern emirates ethnicity finance geometric haneef heighest height high highest hight highway illustration kaleefa khaleefa khalifa lifestyles line luxury middle modern power residential scene scenics shape sheikh skeleton sky skyline speed structure tall tallest thayyil thayyilani tower towers transportation travel twilight uae united unity urban vacations variation vector world worlds