Since we had so much time in Florence, we decided that one day we would hop on the train after lunch and visit a nearby city. Clio would have preferred Sienna, I was more leaning towards Pisa (:D), and at the end the weather forecast seemed to be better towards that direction, so we went for the latter. I am sure Sienna would have been also very nice, but I really liked Pisa. There was so much more to it than the leaning tower.
First of all, it was really nice that the Piazza del Duomo was green and spacious. Then the Cathedral itself was surprisingly much nicer from the inside than the one in Florence. The Baptistery here on the other hand was really not so interesting from the inside. In contrast, slightly hidden behind the famous buildings you could get into the Camposanto Monumentale, which only showed its beauty after passing through the entrance. The hallways and the symmetric architecture places this clearly on top of my Pisa sightseeing list. Highly recommended!