The municipal seat has been at this location on Town Square since the 15th century.
In the early 18th century that first Gothic building was reworked in the Venetian Baroque style with plans drawn up by the Italian architect Carlo Martinuzzi.
In the vestibule you can find a plaque from the Gothic predecessor with the city’s coat of arms, as well as a sculpture of Hercules and the Nemean lion from a lost fountain dating to the 1600s.
