The rise of colossal towers across the planet coincided with the surge of cutting-edge design, but just as these monoliths began breaking world records, new threats were on the horizon.

Dubai's Burj Khalifa is over 2,700 feet high and the tallest building in the world, and as engineers race to top this record-setting height with cutting-edge tech, a new 3,200-foot-tall building in Saudi Arabia is poised to take the crown.