The two towers and the romanesque narthex are the only remains of the former Saint-Vincent Cathedral in Macon.

Only the narthex is visible: it is transformed into lapidary museum. One can see the old eardrum (early twelfth century) whose sculptures were mutilated during the religious wars. With the presented models and plans, it is possible to reconstruct the architectural evolution of the building from the eleventh to the fifteenth century and to get an overview of the building.