Each level of the façade, a gem of early-16C Flamboyant Gothic art, presents a different drawing that is worth taking the time to examine. The bell tower, rebuilt in the 18C and reworked in the 19C and 20C, houses a peal of 37 bells that are part of the backdrop of life in Saint-Quentin. Inside, the Marriage Hall has retained an original beam and a huge Renaissance-style fireplace, while the Council Hall is depicted by an attractive Art Deco interior.