Three days is the minimum to get a feel for Florence and its trappings. Since many museums close on Mondays, and many churches close to tourists on Sundays, you’d do best to schedule a midweek visit. Watch out, too, for opening-times : some museums only open in the mornings, the Baptistry only opens in the afternoons, and almost all churches close in the middle of the day. The famous sights, notably the Duomo and the Uffizi, can get absurdly overcrowded - on a whistle-stop visit, it makes sense to reject them in favour of the under-visited Bargello, Cappella Brancacci and Cappelle Medicee. Booking entry to museums in advance is strongly recommended .