The cathedral measures 145 feet long and 70 feet wide. The height from the floor of the nave to the pine ceiling is 45 feet. In 1936, the Lady Chapel, the gift of Henry and Eleanor Tomkins, was constructed. In its tower hangs a bell, which had originally hung in the tower of the first wooden church on the site. The bell was donated as a remembrance to Corporal Lowry of the North-West Mounted Police who died during the Riel Rebellion of 1885.