In the first half of the 19th century, the structures surrounding the vast (2 ha) Place du Capitole were redesigned, but the current façade, 135 m long and built of the characteristic pink brick in Neoclassical style, dates from 1750, built according to plans by Guillaume Cammas. The eight columns represent the original eight capitouls. In 1873, Eugène Viollet-le-Duc built a bell tower typical of the style of northern France on top of the donjon of the building.