The Pro-cathedral of the Assumption ('Pro' meaning ‘in place of’) is a historical catholic church in the city of North Bay, Ontario. The white limestone building, built in 1905, speaks to the history of the city as well as a strong faith community that came together to construct a building of impressive scale and craft for the small city in Northern Ontario. The tall church is a landmark, holding a central role as a gathering place, not only for the city, but also for the entire diocese of Sault Ste. Marie.