[1] The oldest part of the current complex is the belfry which was commissioned by Cardinal Andouin Aubert: it was designed in the Gothic style and completed in 1363.

In 1447, during the residency of Bishop Pierre de Foix, who was the papal legate in Avignon,[4] the town council acquired the apostolic palace from the Benedictines of the Convent of St. Laurence and converted it for municipal use.

[10] The new façade was designed by Léon Feuchère in the neoclassical style, built in ashlar stone and was officially opened by Napoleon III in the presence of the mayor, Paul Poncet, on 24 September 1856.

The central bay featured a round headed doorway with a moulded surround flanked by two pairs of Corinthian order columns supporting a modillioned entablature.

On the first floor, there was a French door leading out onto a balustraded balcony flanked by two more pairs of Corinthian order columns supporting an open-modillioned pediment with a clock in the tympanum.