A 3D Size Comparison of the World's Tallest Building as its changed throughout our history! Hope you enjoy! :Dbr #khojkhabar,#dubai,#singerbulding,#metlifetower,#world tred center,br br Disclaimer -br br video is for educational purpose only.Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.