I physically would not be able to do it. There's a glass floor on the CN Tower observation deck and as soon as I step on it, my brain locks my legs and I can't move. Freaky experience.
Same thing happened when I bungee "jumped". I had to let myself fall forward to override my brain's instructions to not fucking do it.
At the Top of the Rock you sit on a beam like that and it rises 12 feet in the air (you’re buckled in).
Then the beam turns 180 degrees and you get an incredible view of Central Park and Uptown. Then it spins another 180 and then lowers you back down to the ground.