A remarkable feature of the observation deck's lower floor is a glass floor section. You can stand on glass and look straight down. Needless to say, there were a number of people who were completely unable to even go near the glass floor. I wasn't sure what my reaction would be, but I was pleased to note that I felt absolutely no ill effects, walking straight onto the glass panels. Looking straight down was fascinating, rather than terrifying.
The views of Toronto are awesome. On a really clear day, you can apparently see Rochester, and the mist from Niagara Falls. Not this weekend, but we were lucky enough that the weather had cleared up a lot for us. It wasn't nearly as overcast or rainy as some of the weekend had been.