@GalacticTurtle @Piss_Ant @ninapaley Montreal also has a lot of old architecture, but a lot of it has been torn down and replaced. And certainly newer buildings have often been huge modern monstrosities. Old Montreal is beautiful as are some other parts that haven't been touched as much. Québec City (the old part) is spectacular. If you're a fan of old buildings, try and get out there some time.

I've never been to Oshawa so I will refrain from comment. Toronto and Vancouver are not as old and didn't have the influence (or at least not as much) of French architecture, not having been originally built up by the French (well, after they just hauled up here and declared it theirs).