Got to do it if you're in Toronto for the first time. It dominates the skyline, so you can't help but wonder what is up there while walking around the city. The views are great. Coming next door to Rogers Centre helps because you can stare down into the stadium - as a baseball fan, I loved it, even though the roof was closed. There is also a section with open air grates to stare through rather than looking through glass. One section even has a glass floor - whooo. For a little extra, you can go up even higher. Not sure it adds a whole lot to the experience, but it is not that much more ($12 CAD, about $9 USD), so just go for it, people. A really cool hour, y'all.