My only moan would be the terrible organisation of getting into the Uffizi. The queue was very long, and security so, so, so slow. Considering we had pre-booked tickets, as well, it made it even more annoying, but am glad I went.
Santa Crois, inside & out
Believed to be the original inspiration for the Statue of Liberty
Leonardo da Vinci's unfinished "Adoration of the Magi"
Leonado's "Baptism of Christ"
Roman statue - "Hermaphrodite"
The Ponte Veccio (the original bridge of the city)
Davi (well a copy, as the original is inside to make sure it doesn't degrade any further)
Around the city
I think, overall, Florence was my favourite city of the trip.