In 1854, Bishop Chalandon from Belley ordered his priests to erect a statue in honour of the virgin. Father Monet, from Vesancy, chose a place called Riantmont. They decided to build the statue at the top of this hill. Soon after, a pilgrimage was created, attracting the believers from the pays de Gex and Geneva.
In 1868, the Bishops from Belley and Geneva decided to build the chapel. Pope Pie IX established this sanctuary for the protection of the Pays de Gex and Geneva.
It is said that all the young people from Vesancy who went to war in 1870 came back alive thanks to the good protection of the Virgin. In 1875 the bell tower was built, and the chapel was more and more renowned for its miracles.
In 1956 the centenary was celebrated by the Bishop of Belley and the local priests. A pilgrimage is held every Whit Monday.