An imposing building in the Greco-Roman style, with a domed form crowned by two beautiful white bell towers, the Cathedral rises above the surrounding plains like a queen upon her throne.
Inside, this cathedral contains the work of the priest-artist, Monsignor Charles Maillard, P.D. It is a symphony of colour, paintings depicting biblical scenes, and celestial figures that come together to form a harmonious whole.

Here, one can also find a part of the history of this place in the Stations of the Cross, since the people of the region served as models for the painter in his representations of the figures in the Passion of Our Lord—a moving testimony to the faith of our French-speaking ancestors.

Along the upper walls of the church, visitors can admire a fresco depicting the story of Saint Philomena, a virgin martyr from the early centuries of the Church, for whom Monsignor Maillard had a particular devotion.

On the north side, above the central entrance, the stained-glass window of Our Lady of the Assumption was created and installed to remind the faithful that, since 1964, the parish has had a new patroness.

The chapel to the east of the sanctuary has also been transformed into a diocesan museum, bringing together various artifacts and memories that speak to the importance the Cathedral has held in the lives of the people of this region.

Taken as a whole, this Cathedral, through its beauty, has the spontaneous and intuitive effect of captivating the visitor—and of giving them a sense of the divine love that our Creator has for us, as well as His tenderness.