I've spent a lot of time at George Bell Arena this past decade. My oldest son plays there, and even I've played there for a stretch. I call it the old barn and enjoy walking around looking for relics of the past.
Recently, all the signage was updated. The new signage is from the City of the Toronto and very functional, but it sure lacks the character of the old signage. There are still a few examples of the old signage, if you look hard enough.
If you leave the beaten path, you'll reach this door. I dared not enter.