Believe it or not there are three David's in Florence. The original, sculptured in 1501 by Michelangelo at the age of 26, was moved inside to the Accademia from Piazza Signoria in 1873 to prevent damage from the weather. However this did not stop one hot-headed visitor causing significant damage in 1991 when Piero Cannata chopped off David's left toe with a gemstone hammer. It was subsequently stuck back on and security tightened up. You can queue or book tickets online, or check out the copy standing in Piazza Signoria for free , or climb up the hill to Piazzale Michelangelo to see the bronze version. The Accademia is open every day except Monday, 08:15-18:50 with the last booking for 17:30.