Above the central pillar in front of the altar appears a large red lily, symbol of the French monarchs and therefore associated with Saint Louis of Toulouse, who at the end of the thirteenth century renounced the crown of the Angevin kingdom to become a Franciscan.
On the left, on the first pillar, there is an inscription with a couplet indicating the year 1065 as the beginning of the Romanesque construction by the Benedictines. Further to the left, resting against the tuff and terracotta wall, is a large slab of light-coloured stone on which, according to legend, Saints Fermo and Rustico were beheaded. Despite being thrown into the river with a stone around their necks, they did not drown and had to be retrieved before being killed.
