It was the tallest building in the US before the Freedom Tower in New York was constructed. It has a transparent floor jutting out from the building that you can stand on and see the world 103 floors beneath your feet.
Because you can go up to the Skydeck on the top floor and see for miles on a clear day.
Yes, Brandon is right & the glass balcony is an Instagram favorite of tourist spots. U can take pics of yourself with the city view beneath you.
Thanks! Your answer is awaiting moderation.