The old cathedral church of Vaison-la-Romaine is located in the upper town dominated by the old castle of the Counts of Toulouse, a medieval fortress protecting the medieval town surrounded by ramparts. It is located to the east of the rocky escarpment. Oriented North-South (apse to the South), it is anchored on the rock and includes the old rampart at its base.
The building consists of a nave of four bays of unequal length with ribbed vaults and a pentagonal choir covered with a sexpartite ribbed vault. Four differently vaulted side chapels open to the East and West in each bay of the nave. A platform supported by a drum is attached to the back of the facade. A sacristy covered with a semi-circular vault communicates to the east with the choir and with a ruined reduction room to the west. A square bell tower rises above the third west side chapel.
Cathedral Church of Saint Mary of the Assumption
