Well, I must tell you something about my Country! In Italy I've been almost everyway, but my favourite city is Florence. You must know that I live in Venice, a similar place for many aspects. So what do they have in common? They're both an "open museum", they're both elegant and provincial cities, at the same time; touristic and amusing. But the atmosphere it's really different. I find Brodskij's Venice sometimes too melancholic, while in Florence always felt at home and had great times, meeting a lot of extroverse people.
In Florence you can see the works of one of the best Renaissence painters, the monk Filippo Lippi, at Pinacotheque and Uffizi. His model was his lover, Lucrezia Buti, a beautiful religious woman.. read more about this story: it's very curious!
And finally there you can find Heaven's Door. It isn't a joke! There's an amazing golden door decorated with Christian stories, near Duomo. Enjoy!