Great, gorgeous, gothic architecture that is breathtaking. The crowd seems unavoidable but adds to the liveliness of the place as do the pigeons. Tip: some great music performances on streets nearby.
Definitely visit the castle. Best purchase for the money - gets you a lot for 5€. Great art, architecture, and even some furniture right now.
A great little museum with an impeccable collection of must see older paintings along with some gems from the futurists and other early 20th century Italian movements.
