I went to Toronto twice on business, once for 2 weeks.
First time was in January and it was COLD COLD COLD.
It was so cold that if you went out without a hat on it hurt your head, so cold that people dont wash their cars because if they did the locks would freeze and they could not open them.
There is a massive underground world in Toronto city center called PATH. It is so cold outside they have built this vast subterranian world under all the buildings.
People get out the tube train then walk, underground, to their office or place of work, never having to go out into the open.
Their are shops under there, bars, restaurants, cinemas and so on. Nicely done out with marble floors etc. No graffitti and very safe.
You can read more about it here:
http://www.toronto.ca/path/
http://en.wikipedia.org/wiki/PATH_(Toronto)
Here is a map of it (rather large)
http://www.ocap.ca/path/path_brochure-2.jpg
Path brochure
http://www.toronto.ca/path/pdf/path_brochure.p df