The facade and the portal are fifteenth century, with two superimposed chapels at the corner of the nave and north transept.

The ornately decorated chapel has been a place of pilgrimage for centuries with Catholics coming to pray in front of the statue of the Virgin Mary. What had brought them here to Montrichard was a miraculous fountain which was supposed to have healing powers,its waters were said to blessed by Saint Martin de Tours who then used it to baptise Christian converts.

The outside stairway to it is a rather unsympathetic addition.

There is also 'L'église Sainte Croix' which is built in to the castle fortifications plus a pretty little chapel attached to the 'Hotel d'Effiat'.