This is a spectacular museum. While the collection isn't on par with the Metropolitan Museum in New York, it's still an interesting collection with lots of depth. What impressed me the most, however, was that with the exception of any special exhibits, the museum is free.
After browsing the galleries, we took a free tour of the decorative arts glass collection, which exposed me to pieces I probably wouldn't have checked out otherwise. I found it interesting and especially loved the Art Deco pieces. I also love European Art and enjoyed those galleries the most. There are many memorable pieces.
I was bummed that we visited just days before a Dale Chihuly exhibit opened. It's something I would definitely recommend (the only thing you'll have to pay for) based on a spectacular exhibit he did at the Atlanta Botanical Garden nine years ago. There's a large piece out front to pique your interest. But hurry, it closes in a couple of weeks.
Two restaurants are also available in the museum, one white table cloth, the other a more casual cafeteria style good for sandwiches and snacks.
We spent an enjoyable Sunday afternoon immersed in spectacular art. The museum should be a must visit on your trip to Montreal.