I wonder how the higher floors would be in a building like that? I'm on the 97th of the Sears Tower, and there are days when it is rather uncomfortable as the building sways. Are the newer buildings, with mass dampers, immune to this?
I've been to the observation deck several times, but I've never experienced the sway. What's it like? How are you not terrified? All I would be thinking about is the building toppling over, especially after 9/11.
It is only noticeable on very windy days. Not terrifying at all, but a little uncomfortable at times. On a really bad day, you can end up feeling a bit sea sick.