Church of Saint-Éloi-et-Saint-Martin

St. Joseph's Church was built from 1913 to 1922 and was intended for the miners of pits no. 6, no. 6 bis and no. 6 ter, known as the Hallicourt pits. The works were interrupted by the beginning of the 1914-1918 war and only resumed after the war according to the plans of the architect Paul Degez. The neo-gothic brick church with corbelled stone corbels in the regional style has a bell tower above the façade, topped by a high slate spire and a pointed porch. It has a Latin cross plan.

This church was built in 1547 at the request of Charles the Fifth. It was destroyed in 1918 and rebuilt between 1924 and 1927 by the architect Cordonnier. In neo-Gothic style, it is built in brick and a little stone, and thus refers to the Flemish Gothic brick churches. This neo-Flemish style is characteristic of the architect Louis Marie Cordonnier, and there were many reconstructions in the region after the First World War. The church is not purely neo-Gothic or neo-Flemish, it incorporates many references to French classical Gothic, and above all it gives pride of place to modern techniques such as the metal frames that structure the vaults.

Collégiale Saint-Omer, the Romanesque church, built 900 years ago has massive exterior architecture which giving way to an interior architecture which is light and harmonious.