Inspired by the superior height of Burj Khalifa, the Museum measured supertall skyscrapers according to a higher standard than the common 300 meters, as part of its 2007 exhibition World’s Tallest Building: Burj Dubai. Our 380+ meter benchmark was set by the Empire State Building’s 86 occupiable stories and 1,250-foot height to the top of its original 1931 mooring mast. Buildings that matched or exceeded these markers in 2007 were included in this global survey.