The Cattedrale di Santa Maria del Fiore (English, "Cathedral of Saint Mary of the Flower") is the main church of Florence, Italy. Il Duomo di Firenze, as it is ordinarily called, was begun in 1296 in the Gothic style to the design of Arnolfo di Cambio and completed structurally in 1436 with the dome engineered by Filippo Brunelleschi. The exterior of the basilica is faced with polychrome marble panels in various shades of green and pink bordered by white and has an elaborate 19th-century Gothic Revival façade by Emilio De Fabris.

The cathedral complex, located in Piazza del Duomo, includes the Baptistery and Giotto's Campanile. The three buildings are part of the UNESCO World Heritage Site covering the historic centre of Florence and are a major attraction to tourists visiting the region of Tuscany. The basilica is one of Italy's largest churches, and until development of new structural materials in the modern era, the dome was the largest in the world. It remains the largest brick dome ever constructed. The cathedral is the mother church of the Roman Catholic Archdiocese of Florence.

From October 2015 it opened the Great Museum dell'Opera del Duomo. The museum offers a unique experience with riscostruzioni the first side of the Dome with more than 750 works on display of the greatest artists of the Renaissance.

From October 2015 it opened the largest museum dell'Opera del Duomo. The museum offers a unique experience with reconstructions the first side of the Dome with more than 750 works on display of the greatest artists of the Renaissance.

You can see the video of the museum at this link.