Never had a worse personal anxiety experience than visiting it 15 yrs ago with my nephews who were 4 and 5yrs old. At the time you could go up elevators on the side of the new facade but you had to walk down spiral staircases on the old side. Those staircases have a huge open circle all the way down to the bottom. I was so worried for those kids. First time I had experienced anything close to parental fear. My brother and my sister in-law on the other hand never seemed phased.

That said. Dying to go back. So much progress has been made since then.