Brunelleschi’s Dome crowns Florence Cathedral, Santa Maria del Fiore, on Piazza del Duomo in the historic center. It remains the largest masonry dome ever built, and it still defines the Florence skyline. Filippo Brunelleschi raised it without a full wooden centering frame, and travelers climb it to see that engineering from inside and to look out over the city from the top.
According to the Opera del Duomo, the dome was built between 1418 and 1434. It has two interlocking shells, and the climb runs through the gap between them. Along the 463 steps you pass herringbone brickwork and walk a narrow gallery directly beneath the Last Judgment frescoes by Vasari and Zuccari. At the base of the lantern, an open terrace looks out toward Giotto’s Bell Tower, the Arno, and the hills of Fiesole. There is no elevator, and some passages are tight and steep.
Visitor Highlights & Practical Info
You can only climb the dome with the Brunelleschi Pass, which also covers the Baptistery, the Bell Tower, the Opera del Duomo Museum, and the crypt of Santa Reparata. Each site allows one entry within the pass’s validity window. You must reserve a dome time slot when you buy the pass on the official ticket site, and slots sell out weeks ahead from April through October. Book the first slot of the morning for cooler stairwells and thinner crowds. Pack light, because large bags are not allowed on the climb.
