The Cathedral of Santa Maria del Fiore in Florence is the fourth largest cathedral in Europe. The construction of the cathedral was started by Arnolfo di Cambio, a sculptor and architect, in 1296 and this construction lasted 140 years. The frescoes on the dome of Vasari are less spectacular than the dome itself, the greatest architectural and technical achievement of Brenelleschi (1377-1446).
In the Cathedral of Santa Maria del Fiore in Florence you can see the early medieval and ancient Roman remains of previous buildings discovered during excavations under the cathedral, and the gallery under the dome leads to 463 steep steps and the view is great. 
The bell tower of the Cathedral of Santa Maria del Fiore in Florence was started in 1334 under the leadership of Giotto, at that time the master of the city. Until his death in 1337, the first of the five floors of the tower was completed. Then the bell tower of the Cathedral of Santa Maria del Fiore in Florence was completed by Andrea Pisano and Francesco Talenti.

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