The Council on Tall Buildings and Habitat (CTBUH) has investigated a growing trend in buildings installing add-ons that do not include usable space in order to achieve "super-tall" status.

“We noticed in Kingdom Tower in Jeddah, that a fair amount of the top of the building seemed to be an unoccupied spire,” the organisation said in a report. “This prompted us to investigate the increasing trend towards extreme spires and other extensions of tall buildings that do not enclose…