The belfry or Clock Tower of Roussillon is adorned with a campanile with a hexagonal base surmounted by a semi-sphere-shaped structure, a second smaller and cylindrical structure and then a large cross. The different faces of the belfry present, under the bell, clocks and sundials with a date, 1727, and the inscription 'Hora ne te fallat hora' (Pray that you do not miss this hour).