The Basilica of Saint-Julian is located in the southern margin of the former Diocese of Clermont, in the municipality of Brioude, in the French department of Haute-Loire.

It was built on the presumed tomb of the saint by a Spanish lady, as a token of gratitude for the fulfillment of her vow.

[3] A clergy was established to celebrate worship and welcome the faithful: Gregory of Tours mentions in his writings the existence of a monastery and monks.

It was favored by the development of the town of Brioude, which became a place of pilgrimage and a stop on the routes to Santiago de Compostela, Rome, and Jerusalem.

Pope Urban II, who came to preach the First Crusade in Clermont in 1095, placed Saint-Julian under his direct authority.