Pisa: Towers & Triptychs
From Wikipedia: “The lamp at the center of the nave is called Galileo's lamp, because a legend says that the great scientist formulated his theory of isochronism of the pendulum while watching its oscillations from the roof of the nave. The original, however, smaller and very different than this one, is found today in the Camposanto.” Still, the lamp in the Cathedral makes one think about religion, astronomy, and the history of human knowledge.
On the north side of the Arno, just west of Ponte della Fortezza, is the wonderful Museum of San Matteo. The opening hours were a bit tricky to figure out in March, yet the paintings were well worth the effort!
