"Museo dell'Opera del Duomo is the gorgeous and extensive museum dedicated to the Dome and Basilica, as well as restoration projects. Home to the largest collection of sculptures from Medieval and Renaissance Florence in the world, this museum has an active restoration lab and school on site. Other highlights include Ghiberti's doors, Michelangelo's The Deposition, a model of the original, never-completed façade of Santa Maria del Fiore, and a room dedicated to Brunelleschi's architectural masterpiece: the Dome of Florence cathedral. Be sure to hit the gift shop on the way out; it sells great books." - Erica Firpo