Last weekend was my first visit to St Joseph's even though I've been coming to Montreal since I was a kid. I'm not a religious person so this place didn't have the same effect on my as it would for say, a practicing Catholic.
The architecture is nice and seemed very modern on the inside considering it was built in the late 20's. It's a very large building with lots of different chapels. There's always a mass going in one of them somewhere. The main cathedral is over-the-top big and I'm assuming is supposed to make you feel small compared to the hugeness of the catholic mafia... err I mean, god.
Since we went in winter, the gardens and other outdoor areas were closed for the season so I didn't get to see all of it. Overall, for me, it was a nice building and I took nice photos.
Oh and don't miss the hardcore pilgrims climbing the stairs on their knees! Crazy!