Skybox

The tallest building in the U.S. has now been outfitted with some glass-bottomed balconies that let you stare straight down 103 floors.

The balconies are suspended 1,353 feet in the air and jut out four feet from the building's 103rd floor Skydeck. Their transparent walls, floor and ceiling leave visitors with the impression they're floating over the city.

It just opened. I haven't checked out this new feature yet.

It looks light and airy
and frightfully scary.