Our Lady of the Immaculate Conception is an exceptional example of the High Victorian Gothic Revival style, an architectural movement that was international in scope. The design of this church was inspired by Cologne Cathedral. Characteristic of the style are the twin towers, large rose window, pointed windows and an interior plan featuring chapels that radiate from the apse. Constructed in several stages beginning in 1876, the church was designed by Irish-born Joseph Connolly, the principal architect of Catholic churches in late 19th century Ontario.