The Abbey of Saint Victor was named after the soldiers and saint Victor of Marseilles and was a monastic foundation. The abbey was stripped of its treasures and its relics were burned to become a warehouse and a prison in 1794. The only remaining sight of the abbey is the church of Saint Victor. The crypt contains important evidence of the presence of a quarry exploited during Greek times.
Archeological evidence of the abbey says that it was built at the end of the 5th century but it is often told that it was built by John Cassian in the year 415 (no proof has been found to confirm this).