The site on which the sanctuary of Plout stands, dedicated to the Virgin Mary, has been venerated since the 14th century: since then, a shrine carved into the rock has housed a statue that is the object of veneration, Notre Dame des Ermites.
In the 1600s, a builder who was miraculously healed after invoking the Holy Virgin built the first chapel.
A new and larger sacred building was completed in 1715. The devotees of the Virgin of Plout were in fact more and more numerous, as were the graces received, so much so that the title of Madame "des Ermites" was changed to Madame "de Tout Pouvoir".
In 1744, the Prior of the Collegiate Church of Saint Ursus, Charles Beltram, donated to the sanctuary a new statue of the Virgin with the sceptre in her right hand and the baby Jesus sitting on her left arm.
The present building, built in 1851, has a Greek cross plan with the dome in the centre and a neoclassical entrance with four columns. On the façade a fresco depicts the Madonna with Saints.
Inside, the walls are covered with ex-votos. The high altar houses the wooden statue of the Virgin de Tout Pouvoir.
The sanctuary can be reached in a few minutes by car from Saint-Marcel by taking the road from the town up towards Les Druges. It can be visited during the celebrations on 26th July and 14th September. Other openings take place in the summer.