If you're in Toronto, the newest thing to see is the Art Gallery of Ontario, which was rebuilt by Frank Gehry. It is truly beautiful (the previous gallery was a poky bore). Even more than that, they have taken out of storage tons of amazing paintings and artefacts -- for a well-rounded glimpse of Canadiana, it is now hard to beat. The main "classic" art is nothing great, but the whole experience is a delight.

If you are in Montreal, a really interesting museum is the city museum right down by the old Waterfront. The basement contains the original excavations for the first city.

Peter T.