The only attraction in Pisa is the leaning tower. To go up the tower you get tickets with a certain time on them. Generally 1-2 hours after you buy them you can go up. The best way (we found out the long way) is to get tickets then go eat and when you are done eating it is your time to go up. Pisa is neat to see but it does not take all day. After Pisa was the final stop of Florence.