This was a great site to see. It was very ethereal there and we went on a sunday afternoon and there was mass going on which was lovely to participate in even if you aren't catholic.
The view for the Oratoire Saint Joseph was phenomenal. The view is beautiful and you can see all of montreal with an unobstructed view from the terrace. If you are visiting montreal, this place is a must visit.
Inside you can see the tomb of Joseph and light vigil candles and pray for the saints.