Basilica of Notre-Dame de la Trinité

He devoted his whole life to preaching, expanding use of the triple Ave Maria prayer and publishing tracts in several languages on the topic.

He was succeeded by Father Clovis, who studied and got to know the theological basis for Marian devotion to the triple Ave Maria, which found its expression in the title 'Our Lady of the Trinity'.

The whole complex of the church, cloister, galleries, convent buildings and the stained glass windows were inscribed on France's historic monuments list in 1994 and again in 1996.

The basilica has a largely uniform architectural and decorative style and is considered as one of the major works of French Christian inter-war art.

It has fourteen large windows illustrating the mysteries of Mary in the history of salvation at the heart of the Trinity, designed by Louis Barillet, Jacques Le Chevallier and Théodore-Gérard Hanssen.