Saint-Omer Cathedral

The seat of the Bishop of Saint-Omer were instead absorbed into the Diocese of Arras under the Concordat of 1801.

From 1449 to 1472, Jehan de Meldre, prime contractor, proceeded to extend the north cross-section of the transept.

The sculptures of the western portal were sculpted from 1511 to 1515 by the sculptors Bruges Jean and Josse Van der Poele.

In 1553, the nearby town of Thérouanne, where the bishopric of Artois was located, was totally razed by the troops of Charles V, during a conflict that opposed the King of France Henry II.

In the years that followed, it was decided to share the diocese of Thérouanne, in order to respect the borders between the kingdom of France and the Spanish Netherlands.