So many pigeons!
Inside the Duomo!
I loved the floors.
It's hard to see because my flash wasn't on, but do you see the small streak of light (just a spot of light in real life) near the top of that arch?...
...It's actually a small hole designed to let enough light in that people inside the Duomo could tell what time of year it was, as well as their latitude! It's not in this picture, but the floor has a straight line running across the church with the zodiac signs in different positions.When the light from the sun hits the line, it means that it is local noon.