The massive façade of this fortified cathedral is a continuation of that of the Faculty of Medicine. It is the only church in the city to have been spared during the Wars of Religion and, despite its Gothic style, is reminiscent of the Romanesque churches on the coast with only one nave. Its porch is in the form of two small towers, preceded by an arch supported by the façade. The austere 14C nave contrasts with the chancel and transept rebuilt in the 19C