THE DOME ITSELF
There are 463 spiralling, often crammed steps to the top of the dome, but they are worth the climb.
You see both skins of Brunelleschi’s double dome and his lantern; stained glass windows by Uccello, Ghiberti and Donatello; Vasari’s frescoes. And you get a changing series of spectacular views from the windows and lantern, as you climb. While entrance to the Duomo is free, all other parts, including the Cupola (dome) and the Museo dell’Opera del Duomo are included in a €15 (£13) “Il Grande Museo del Duomo” combined ticket, valid for 48 hours from first entry (operaduomo.firenze.it).
expert guide to Florence is at telegraph.co.uk/ tt-florenceguide.