This picture was extremely hard to take since the CN Tower has glass windows that cause glares at this time of the day. I took over 30 pictures because many of them have glares or even cables in the way, as the sun was going down the effect is magnified as the lights from the interior shine off the glass. At the Empire State building, there is a section where you can stick your hand through the wire to take pictures, have a look at the this New York skyline shot taken around the same time of day.
If you ever have any issues trying to take similar pictures just place the actual lens up against the glass and that will allow you to take the picture without any glares. The CN tower now offers a new attraction where you can hang off the edge of the tower and have pictures taken, definitely a must do in Toronto.
Other Sunset & Skyline Pictures: