The plain façade of France’s largest and finest Basque church conceals a splendid interior with a magnificent Baroque altarpiece. It was in front of this very altarpiece that Louis XIV and MarÃa Teresa, daughter of King Philip IV of Spain, were married in 1660. After exchanging rings, the couple walked down the aisle and out of the south door, which was then sealed to commemorate peace between the two nations after 24 years of hostilities.