A neo-Romanesque façade was raised in the nineteenth century to replace an earlier one considered too modest for the building. A local architect, M. Bègue, is entrusted with the plans. He abandons his initial project of a Gothic façade, submitting to the decision of the parish priest who opts for a Romanesque style more in keeping with the Fenestrelle tower. But the seventeenth-century façade can still be seen behind the entrance door.
The cathedral's history is written in its stones. A place of worship is believed to have stood there at the time of the Visigoths and to have been destroyed by either the Saracens or the Hungarians. It was rebuilt in the Romanesque style. The Fenestrelle tower dates from about this period. The Cathare are thought to have set in alight in 1177. Once again, the cathedral had to be restored.