My husband and I will be in Florence from Friday May 20- Monday May 23. I would like to do a full day tour of the Tuscany and I am thinking of doing this on Sunday May 22..Does anyone know if the Duomo and the Uffizzi Gallery are closed on Saturday or Sunday? I plan on seeing more sites in Florence but as of right now, I only have those 2 on my must see list. Overall, are most sites closed on Saturday or Sunday? Thanks!