Halfway between Toronto and Montreal, on the north shore of Lake Ontario, is the mellow old town of Kingston. It's a fine tourist destination, with a collection of really interesting mellow old military fortifications (Fort Henry and a bunch of martello towers), not to speak of quite a lot of late Georgian (Federal to you) public buildings and elaborate Victorian houses. Kingston has great restaurants, a vibrant trad music scene, and the best inland sailing in Canada.

Definitely worth a visit.