The adjoining late 18th century building, with its gothic origins and the 13th century square tower at the back, are the oldest components of the Town Hall complex. On front of the palace there is painted the coat of arms, a red cross on silver background, with four golden bees, one on each corner of the cross and one in the centre. On the adjoining 14th century wing recent restoration works have revealed interesting polychromatic frescoes and some traces of gothic windows can still be seen.
On the southern side, facing the internal courtyard, there are traces in the plaster of a large sun-dial, now almost obliterated by the stone gallery that connects the stairs of the medieval tower to the main body of the building. Inside, the Mayor’s office and the Council chamber are showing furnishings and decorations of early medieval style.