Visit the Uffizi Gallery. It houses some of the most favorite paintings in the world including Botticelli's "Birth of Venus" and "Primavera."
In just a walk through the streets, you will see old water fountains or may cross over the famous Ponte Vecchio bridge. You can also see Brunelleschi's famous dome and the Florence Cathedral.
In the town square, you will see the Palazzo Vecchio surrounded by beautifully sculpted statues, including a replica of Michalengo's David.