Dating back to 1567, purchased by the City in 1997 and later restored, the Ducal palace remains an impressive presence despite the tampering suffered over time, with a succession of styles ranging from the late Renaissance to the early twentieth century (the palace was purchased in 1896 by industrialist Flavio Mossina who decorated it according to the Art Nouveau style of the period). It houses the City Museum inside. A plaque with the reproduction of the old local measurement units is visible under the portico of the nearby town hall.