skyscrapercenter.com

nWknB TIL Houston's JPMorgan Chase Tower was originally planned for 80 floors tall, but it was shortened at the order of the Federal Aviation Administration who declared anything taller than 75 floors in downtown Houston would be a hazard to air navigation
R7GP1 TIL There are more skyscrapers in New York City than all of Europe combined. NYC has 290, Europe has 218.
xyB7 TIL a 1,000 metre (3,281 ft) tall tower named Kingdom Tower is currently under construction in Saudi Arabia. If one were to stack the two original Twin Towers on top of one another and then place the Eiffel Tower in top of that, the resulting structure would not be as tall as Kingdom Tower.