This monastery, the twenty-second of its order, was founded in 1178.

In 1672 a modern edifice had been substituted for the old building; vestiges of its ruins can be seen to this day.

These ruins consist externally of the above-mentioned portal with the three statues, before which our mysterious traveller halted; internally, a small chapel, entered from the right through the portal.

A peasant, his wife and two children are now living there, and the ancient monastery has become a farm.
The monks were expelled from their convent in 1791; in 1792 the Chartreuse and its dependencies were offered for sale as ecclesiastical property.

The dependencies consisted first of the park, adjoining the buildings, and the noble forest which still bears the name of Seillon.
But at Bourg, a royalist and, above all, religious town, no one dared risk his soul by purchasing property belonging to the worthy monks whom all revered.