Florence Duomo
We had a good look inside the cathedral, the crypt, the Baptistry and the large museum. Thankfully the dome walk (464 steps) was booked out. Surprisingly, the inside was the least decorated of any of the large cathedrals we have visited. I don't recall the why of it. Also it looked much smaller inside than it appears outside. After it was finished in the 1400s Medici decided he didn't like the gothic facade. This was removed back to the base brickwork, but for one reason or another the new facade wasn't built until the late 19th century.