Since the establishment of the Diocese of Laval in 1855, it has been its cathedral. The building dates back to the 11th century, but has been much altered and expanded in the 12th, 15th, 16th and 19th centuries.
Since its establishment as the cathedral of the Diocese of Laval in 1855, it has served as such. The building dates back to the 11th century but has undergone significant alterations and expansions throughout the 12th, 15th, 16th, and 19th centuries.