National Geographic

Tall Tech Showdown: Empire State Building v. Burj Khalifa

Tall Tech Showdown: Empire State Building v. Burj Khalifa

From the Biblical Tower of Babel to the ongoing surge of skyscrapers, building tall has always been the tallest of orders. FieldLens' Kelly Lignos Ziv compares the tech behind two of history's most iconic towers.

Google+ Google+