The church was founded under the name of Saint-Sauveur before the 11th century. Expanded several times and rebuilt in the early 18th century, it was the seat of a parish for nearly three hundred years, until the Second World War, and again from 2002. Following several events described as miraculous in the 14th and 18th centuries, the cult of Mary developed strongly in this church, culminating in its elevation to a basilica in 1916.