Filippo Brunelleschi Bust

Florence Cathedral's crossing was already waiting for a roof when Filippo Brunelleschi took on the problem of its dome. The opening was enormous, and ordinary timber centering would have posed formidable difficulties. His achievement depended on construction methods, machinery, and the organization of work as much as on the shape seen above the city.

Building began in 1420. The dome uses two shells, ribs, and carefully arranged masonry, including brickwork laid in a herringbone pattern. Its main structure was completed by the cathedral's consecration in 1436; the lantern was a later undertaking. Brunelleschi designed lifting equipment to move materials to the rising work site.

Born in 1377 and trained as a goldsmith, he also experimented with pictorial perspective. In buildings such as the Foundling Hospital and San Lorenzo, repeated bays, columns, and proportioned openings create spaces whose parts can be read in relation to one another. The contrast between pale walls and darker architectural members makes that organization visible.

Brunelleschi died in 1446. Later biographies celebrate an ingenious individual, but the dome also records a demanding collective enterprise involving patrons, administrators, masons, carpenters, and laborers.