[1] In the late 13th century, when the town of Dax was at the height of its prosperity, the bishops had a number of ecclesiastical buildings constructed, among which was a new cathedral on the site of an ancient Romanesque sanctuary which had become too cramped.

This Gothic structure collapsed in 1646; all that remains of it is the magnificent Portal of the Apostles in the north transept: 12 metres high and 8 metres wide, this doorway contains a quantity of beautiful sculptures, fairly rare in the south of France, despite some mutilations and damage incurred during the passage of time.

Apart from the portal, which was classed as a national monument of France in its own right in 1884, the present cathedral was built from 1694 onwards in a plain style of classical inspiration.

The north elevation however, which looks onto a small square in the historical centre of the town, does not lack charm, despite a certain rigidity.

The organ loft, of the late 17th century, was the work of Caular, a local ebonist.