Basilica of Notre-Dame, Boulogne

The Basilica of Notre-Dame, Boulogne, otherwise the Basilica of Our Lady of the Immaculate Conception, is a minor basilica located in Boulogne-sur-Mer in the Pas-de-Calais département of northern France. The basilica, a prominent landmark of the city with its 101 metres high dome, was built between 1827 and 1875 on the site of the medieval cathedral of Boulogne: the basilica is still known locally as the "cathedral", although the present church has never had that status.

Source: Wikipedia