The belfry is an integral part of the town hall and can only be viewed from the outside. In the old days, it housed the city's prison cells; nowadays, fortunately, they've been turned into a public museum. The building rests on a very simple square tower and rises to 70 metres in height. You can see swirls of decoration on the platform level and the fourth floor is adorned, on each of its faces, by a mullioned window decorated with friezes. An octagonal lantern crowns the summit, sheltering a two-tonne bell. This huge bell is known as Danièle, Marie, Pauline, Henriette, after the mother of the donor thanks to whom the belfry was reconstructed at the end of the 19th century.