Yesterday I took and posted a photo of the Calgary Tower, but today I had enough time to buy a ticket and go to the top.
I hadn't been up there in about twenty years, so I felt a bit like one of the tourists up there.
Anyway, a few years back they built an extension on the observation deck that has a glass floor.
It's a bit freaky to stand on, and although it's very scratched and hazy, you can still get a half decent shot from it
http://www.pbase.com/image/112843238