The Counts of Forez wanted to secure the region and chose this basalt, particularly well-situated hill. The surveillance post is cited as far back as the treaty of 1173 which separated Le Forez from Le Lyonnais. During the Renaissance, it was converted into a country estate.

The visitor walks from the bailey to the keep: discovery of the building and its defensive elements, stopping in the basements, (reconstruction of a pantry), Forez Postal Museum and Renaissance Museum. Games area for children and costumes.