The Opera del Duomo announced a competition to propose a feasible method for roofing the vast octagonal crossing of Santa Maria del Fiore, a problem that had stalled construction and became the defining engineering challenge of early Renaissance Florence.
Brunelleschi received and began his first major architectural commission, the Ospedale degli Innocenti (Foundling Hospital). Its loggia and modular arcades became a landmark statement of the new Renaissance language in civic architecture.
Work on Brunelleschi’s dome for Santa Maria del Fiore commenced. Over the following years he developed and deployed novel hoisting devices and site organization to realize a double-shell masonry dome without full centering.
Brunelleschi began the Sagrestia Vecchia at San Lorenzo for the Medici. Its cube-and-dome geometry and clearly articulated proportions became a key early demonstration of Brunelleschi’s architectural method.
During the 1419–1427 phase of the Ospedale degli Innocenti, Brunelleschi directed the building site and executed major elements including the external loggia, establishing a repeatable module that influenced later Renaissance civic façades.
Andrea Pazzi assembled funds and pledged support for a new chapter house/chapel at Santa Croce—later known as the Pazzi Chapel—setting the patronage framework for a project commonly linked to Brunelleschi’s design ideas.
Construction commenced on Brunelleschi’s centrally planned, octagonal rotunda for Santa Maria degli Angeli. Although never completed, the project signaled a radical move toward centralized Renaissance church planning.
Brunelleschi’s redesign of Santo Spirito advanced from planning into formal commitment (contracted in 1434). The commission became his last great church project, emphasizing consistent modular planning around the nave, aisles, and chapels.
After the dome’s completion, a further competition selected the design for the lantern that would crown it; Brunelleschi’s proposal won, shaping the cathedral’s final silhouette even though execution continued after his death.
The dome of Santa Maria del Fiore was completed and solemnly consecrated by Pope Eugenius IV, marking a major technical and symbolic triumph for Florence and securing Brunelleschi’s status as the leading architect-engineer of his generation.
Although commissioned earlier, building work on the Pazzi Chapel began around the early 1440s. The chapel’s restrained geometry and classical detailing became a canonical reference point for later Renaissance centralized spaces.
Brunelleschi died on April 15, 1446. His death left major projects—such as the Pazzi Chapel and Santo Spirito—to be completed and adapted by followers, while his dome and architectural vocabulary became foundational for Renaissance practice.
Filippo Brunelleschi's Works and Career (c. 1418–1446)
