Opera magazine
2026-05-01
Lorenzo Ghiberti and the Opera del Duomo of Florence: beauty, technique, and thought
From the doors of the Baptistery of San Giovanni to the stained glass windows and the construction sites of Santa Maria del Fiore, the profile of a protagonist of the early Renaissance, between invention and continuity.
Lorenzo di Cione Ghiberti (Pelago, 1378 – Florence, December 1, 1455) certainly occupies a place of honor among the great geniuses of art history who have made the monumental complex of the Opera di Santa Maria del Fiore a temple of beauty and spirituality. This is not only due to the dizzying quality of the works he created for the Cathedral and the Baptistery—true masterpieces of the early Renaissance—but also to their exceptional quantity and technical variety. A nearly unique primacy, which the general public often fails to recognize, perhaps because Lorenzo, despite being one of the pioneers of that extraordinary season of cultural and artistic revolution, and a master to many great artists of the Quattrocento who trained in his workshop, found himself, much to his chagrin, competing with true giants: Brunelleschi in architecture and Donatello in sculpture.
Lorenzo Ghiberti, North Doors of the Baptistery with Scenes from the Life of Christ, 1403–1424, Opera del Duomo Museum, Florence
As an authentic founding father of the Renaissance, we find the very young Lorenzo participating, in competition with Brunelleschi, Donatello, and others, and winning in 1401 the famous competition announced by the Arte di Calimala for the Opera di San Giovanni for the creation of the second bronze door of the Baptistery, an event that modern historiography considers a milestone in the beginning of that era. Between 1403 and 1424, Ghiberti, assisted by an extraordinary workshop of young talents and experts, created what is known today as the “North Door” of the Baptistery (which at the time was located on the east side). Two colossal gilded bronze leaves, more than 5 meters high and three meters wide overall, weighing almost 8 tons, adorned—according to a scheme that takes up the older southern door by Andrea Pisano—by 28 quatrefoil panels, in which the Four Evangelists, the four Doctors of the Church, and twenty episodes of the New Testament are depicted, from the Annunciation to Mary to Pentecost. These are set in a frame on which ivy grows, housing insects, small amphibians, and reptiles, and from which 28 wonderful heads emerge. The style of these reliefs is still influenced by the lyrical linear and plastic attention of the so-called “Late Gothic,” but it is already projected toward a deep understanding of nature, anatomy, and classical statuary. Ghiberti placed his own portrait there and signed it with pride OPUS LAURENTII FLORENTINI (“Work of the Florentine Lorenzo”).
Lorenzo Ghiberti (after a cartoon by), Assumption of the Virgin Mary, 1404, Santa Maria del Fiore, Florence.
That first commission guaranteed him immense fame right from the start, and Ghiberti’s workshop thus became one of the most important in Florence and beyond; and one of the greatest artists active in the construction sites of the Cathedral, that is, for the Opera di Santa Maria del Fiore, which was overseen by the Arte della Lana.
In 1404, he created the cartoon for the large stained glass window of the counter-façade, with its 6 meters in diameter being the largest in the temple, depicting The Assumption of the Virgin Mary among Angels and crowned by Christ. Between 1412 and 1415, he invented those for the two side oculi of the same counter-façade, with the protomartyr Saints Lawrence and Stephen enthroned. Between the end of the fourth decade of the century and the beginning of the next, as many as 33 stained glass windows were created based on his design. Various master glassmakers executed all the windows of the radial chapels of the tribune: fifteen high windows depicting Characters from the Old Testament and fifteen low windows with Saints, to which were added three oculi of the drum with Stories of Mary and Christ, in particular The Presentation of Jesus at the Temple, The Agony in the Garden, and The Ascension.
Filippo Brunelleschi and Lorenzo Ghiberti, Architectural model of the dome and two tribunes, 1429, Museo dell'Opera del Duomo, Florence
Ghiberti’s polyhedral mind then led him to combine his work on the stained glass windows with a commitment to architectural construction sites, contributing significantly to the construction of the Cathedral. His debut as an architect took place as early as 1404, when he was called to be part of a commission of experts to correct a structural error made in the area of the tribune. A few years later, between 1407 and 1409, Ghiberti took care of the design of the new clerestory windows, providing the drawings necessary for their creation. The most significant chapter of his architectural activity began in 1418, with his participation in the competition for the Dome of Santa Maria del Fiore. Although the victory was awarded ex aequo to him and Filippo Brunelleschi, the relationship between the two was complex. Starting in April 1420, Ghiberti officially held the role of co-superintendent for the construction of the Dome. He remained in the position of supervisor until 1436, although his influence was reduced when Brunelleschi emerged as the true “inventor” of the project. But that is not all; in 1429, he worked on an overall model that included the apse and the façade, while in 1436 he presented a project for the lantern of the Dome which, however, saw Brunelleschi's design preferred once again.
Lorenzo Ghiberti, Shrine of Saint Zenobius, 1432, Santa Maria del Fiore, Florence
Again for the Cathedral and once more as a bronze sculptor, in 1432 Ghiberti won the competition to create perhaps the most sacred work of art in the temple: the reliquary intended to contain the remains of Saint Zenobius, the first bishop of Florence and patron saint. For the Arte della Lana, Ghiberti had completed the beautiful Saint Stephen of Orsanmichele a few years earlier, and with the bronze left over from the casting, he brought this work of extraordinary workmanship to life. The reliquary presents three reliefs with miracles of the saint: The Resurrected Maiden on the front side, and The Miracle of the Servant and The Miracle of the Cart on the shorter sides. On the back, six angels support a garland with an epigraph formulated by the humanist chancellor Leonardo Bruni.
Lorenzo Ghiberti, East Doors of the Baptistery with Stories from the Old Testament (known as the 'Gates of Paradise'), 1425–1452, Opera del Duomo Museum, Florence.
And finally, his masterpiece: the Eastern door of the Baptistery, known as the “Gates of Paradise.” After creating the previous door, the Arte dei Mercanti di Calimala entrusted the commission for the third and final door to Lorenzo Ghiberti without a competition. The door depicts stories from the Old Testament, from the Creation of our Progenitors to the meeting of Solomon with the Queen of Sheba, passing through the stories of Cain and Abel, Noah, Abraham, Isaac, Esau and Jacob, Joseph, Moses, Joshua, and David. Ghiberti completed it in 1452. Updated on the innovations that had emerged in the meantime in the artistic and technical fields—the rule of Brunelleschi’s linear perspective, the ancient technique of lost-wax casting, and Donatello’s bas-relief, in addition to the progress of the figurative arts and the theories of Leon Battista Alberti—Ghiberti was free, as he recounts in his Commentari, to break away from the typology of the previous two doors and to elaborate a completely new work. No longer 28 quatrefoil panels, but ten square panels within frames adorned with statuettes of biblical characters and character heads. The way of telling these ten stories is absolutely innovative and complex: exploiting the three dimensions of space, Ghiberti depicted in each panel, in temporal simultaneity, several episodes of the same story, for a total of about forty “effects” populated by dozens and dozens of figures. Once again, the master crowned his ingenuity by placing his signature LAURENTII CIONIS DE GHIBERTIS MIRA[BILE] ARTE FABRICATUM and his own portrait, next to that of his son Vittorio, his collaborator in the enterprise.
Lorenzo Ghiberti, Frame of the North Doors (detail), c. 1423–1424, Baptistery of San Giovanni, Florence
It was his son Vittorio who completed his father’s final endeavor, who died in 1455, namely the splendid bronze frame of the southern door, the last of the frames of the three doors executed by Ghiberti and his workshop, the originals of which are still in their original locations. All are made of floral friezes of spectacular naturalism, in which small animals find shelter among the branches, flowers, and fruits of a myriad of different plants.
It is the triumph of a spring made eternal by art: the spring of the Renaissance, we could say, of which Lorenzo Ghiberti and his workshop were fathers and masters.
