Filippo di ser Brunellesco di Lippo Lapi (1377–15 April 1446), often called Filippo Brunelleschi (/ˌbruːnəˈlɛskɪ/ BROO-nə-LESK-ee; Italian: [fiˈlippo brunelˈleski]), was also nicknamed Pippo by Leon Battista Alberti. He was an Italian architect, designer, goldsmith, and sculptor. He is regarded as one of the first people to begin Renaissance architecture. He is known as the first modern engineer, planner, and the only person in charge of building projects. In 1421, Brunelleschi became the first person in the Western world to receive a patent. He is most famous for designing the dome of the Florence Cathedral and for creating a method called linear perspective that used math to show space in art. This method shaped how artists showed space in pictures until the late 19th century and helped modern science develop. His work also includes other buildings, sculptures, math, engineering, and ship designs. Most of his surviving works are in Florence.

Biography

Filippo Brunelleschi was born in Florence, Italy, in 1377. His father, Brunellesco di Lippo (born around 1331), was a legal official and government worker. His mother was Giuliana Spini, and he had two brothers. The family was wealthy, and the Spini family’s palace still stands today near the Church of Santa Trinità in Florence. When Filippo was young, he studied literature and math to prepare for his father’s career. However, he was interested in art and, at fifteen, became an apprentice to a goldsmith and sculptor who worked with bronze. In December 1398, he became a master craftsman and joined the Arte della Seta, a powerful guild of wool merchants, jewelers, and metalworkers.

Brunelleschi’s earliest surviving sculptures are two (or three) small silver statues of saints (1399–1400) made for the altar of Saint James in the Crucifix Chapel of Pistoia Cathedral San Zeno. He paused this work for four months in 1400 when he was chosen to serve two councils of the Florentine government.

At the end of 1400, the city of Florence decided to create new bronze doors for the Florence Baptistery. A competition was held in 1401, with seven artists, including Brunelleschi and Lorenzo Ghiberti, competing. Each artist had to make a bronze panel showing the story of Abraham and Isaac, with specific figures and details. The jury, led by Giovanni di Bicci de’ Medici, praised Ghiberti’s work but could not choose between his and Brunelleschi’s. They suggested the two work together, but Brunelleschi refused and let Ghiberti win. This decision caused some people to disagree.

Brunelleschi later stopped sculpting and focused on architecture and science. He continued to take on sculpture projects until at least 1416.

Examples of his early sculptures include:
– St. John the Evangelist, Silver Altar of Saint James, Pistoia Cathedral (1399–1400)
– Jeremiah and Isaiah, altarpiece of St. James
– The Sacrifice of Isaac, Brunelleschi’s competition panel for the Baptistry door in Florence (1401), Bargello

During the Early Renaissance, people became more interested in ancient Greek and Roman culture, which they saw as a way to move past medieval art influenced by Byzantine and Gothic styles. Scholars and artists studied these ancient ideas, and Brunelleschi and his friend Donatello visited Rome around 1402 to examine ancient ruins. Their study of Roman architecture influenced Brunelleschi’s designs, including how buildings were lit and how elements were balanced.

Some historians think Brunelleschi developed his system of linear perspective after studying Roman ruins. However, others question this because of his many projects in Florence, the dangers in Rome at the time, and a lack of clear evidence of his visit. His first confirmed trip to Rome was in 1432.

Brunelleschi’s first major architecture project was the Ospedale degli Innocenti (1419–c. 1445), a home for orphans. The Silk Merchants’ Guild funded and managed the hospital. Brunelleschi was the official architect until 1427 but was not often on site after 1423. The hospital opened in 1445. His friend, Francesco Della Luna, helped complete the building later.

The main part of the hospital designed by Brunelleschi was the loggia, or entrance area. The steps leading to the arcade were finished in 1457. The facade has nine arches supported by ten slender columns with decorative capitals, flanked by angular pilasters. The vaults have no cracks, and the walls have fake door frames with rounded tops. Three doors are evenly spaced. This design, inspired by ancient Rome, became a model for many Renaissance buildings. The hospital’s style was simple and dignified, without marble or inlays.

Other projects by Brunelleschi included the Ridolfi Chapel and the Barbadori Chapel, where he used designs similar to those in the Ospedale degli Innocenti. These ideas later appeared in the Pazzi Chapel and the Sagrestia Vecchia, which were part of his most famous work, the dome of the Florence Cathedral.

After starting the Ospedale degli Innocenti, Brunelleschi worked on the Basilica of San Lorenzo, which became the main church of Florence under the Medici family. He designed the central nave and the Old Sacristy.

The Sagrestia Vecchia, built between 1419 and 1429, is a cube with a dome and no decoration except for twelve ribs that meet at an opening called an oculus. The space is divided by an ornamental band, and fluted columns frame the walls. This design became a standard for Renaissance architecture.

In the church itself, slender columns with Corinthian capitals replaced heavy pillars. Instead of traditional vaults, Brunelleschi used coffered ceilings.

Accomplishments

In addition to his work in architecture, Brunelleschi is known for creating the first clear system of linear perspective. This change greatly influenced painting, making it possible for Renaissance artists until the 19th century to create realistic styles. He carefully studied how objects, buildings, and landscapes appear to change shape and lines when viewed from different distances or angles.

According to early biographers like Antonio Manetti, who later shared this information with Giorgio Vasari, Brunelleschi tested his ideas between 1415 and 1420. He painted scenes of the Florence Baptistery and the Palazzo Vecchio from specific viewpoints. He used a grid to guide his drawings, creating a reversed image. He also calculated the size of objects in his paintings to make them look accurate, discovering a way to show 3D objects on a flat surface. To test his work, he made a small hole in his painting and let someone look through the back. Then, a mirror was used to reflect his painting, showing how closely it matched the real scene. Both paintings are now lost.

Brunelleschi’s ideas on perspective were later expanded by artists like Leon Battista Alberti, Piero della Francesca, and Leonardo da Vinci. Using these rules, artists could create realistic landscapes and scenes with accurate 3D perspective. Alberti’s book Della pittura, published in 1436, honored Brunelleschi and described his experiments. Masaccio’s painting The Holy Trinity (1425–1427) in Florence’s Santa Maria Novella church is an early example of this new technique, showing a realistic 3D space and using Brunelleschi’s architectural style. This became the standard method for artists working on flat surfaces like paper or canvas until the 19th century.

• The Holy Trinity (upper part) by Masaccio (1425–1427) used Brunelleschi’s perspective system
• Diagram of Brunelleschi’s perspective experiment
• The Delivery of the Keys, a fresco by Perugino in the Sistine Chapel (1481–1482), includes both linear perspective and Brunelleschi’s architectural style

In 1421, Brunelleschi received what is believed to be one of the first modern patents for a river transport vessel. This invention was designed to move goods along the Arno River more cheaply and efficiently, especially for transporting marble. This achievement is important in patent history, as it shows Brunelleschi’s effort to work outside traditional guild systems.

He also built a large boat named Il Badalone in 1427 to carry marble from Pisa to Florence. However, the boat sank on its first trip, causing Brunelleschi to lose much of his personal wealth.

Brunelleschi had interests in mathematics, engineering, and ancient monuments. He designed hydraulic machines and complex clockwork systems, though none remain today. He also created machinery for religious performances in churches, allowing characters and angels to appear to fly during dramatic events with fireworks. At least one such project, for the church of San Felice, is recorded.

He designed military fortifications for Florence during conflicts with Pisa and Siena. In 1424, he worked on defenses in Lastra a Signa, and in 1431, he helped build walls in Staggia, southern Italy. These walls still exist, but it is unclear if Brunelleschi designed them.

Brunelleschi also planned cities by positioning buildings to increase visibility. For example, in 1433, he supported demolishing buildings in front of San Lorenzo to create a piazza facing the church. At Santo Spirito, he suggested turning the church’s façade toward the Arno River or to face a large piazza to make it more visible to travelers.

Personal life

Brunelleschi did not have any children of his own. In 1415, he adopted Andrea di Lazzaro Cavalcanti, who used the name Il Buggiano, which came from the place where he was born. Andrea was Brunelleschi’s only heir.

Brunelleschi was part of the guild of silk merchants, which included people who made jewelry and gold items, but he was not part of the guild of stone and wood masters, which included architects. In 1434, he was arrested by the guild of stone and wood masters because they said he was working without permission. He was soon let go, and the guild members were accused of holding him against his will.

Location of remains

Filippo Brunelleschi's body is buried in the crypt beneath the Cathedral of Florence. Antonio Manetti, who knew Brunelleschi and wrote about his life, recorded that Brunelleschi was honored with burial in the Basilica di Santa Maria del Fiore. A marble bust, said to have been carved from life, was placed there to honor him forever, along with an impressive inscription. The inscription at the cathedral's entrance reads: "The grand dome of this famous church and many other inventions by Filippo the architect show his great skill. Because of this, a thankful country that will always remember him buries him here under the ground." Later, a statue of Brunelleschi, gazing upward at the dome, was placed in the square outside the cathedral.

Fictional depictions

In 2016, an actor named Alessandro Preziosi played Brunelleschi in a TV show called Medici: Masters of Florence. In 1995, John Rowe portrayed Brunelleschi in a radio play written by Jean Binnie called Battle for the Dome. This play was produced by BBC Radio 4 in 2025.

Principal works

The main buildings and projects designed by Brunelleschi or in which he was involved, all located in Florence:

• Dome of the Florence Cathedral (from 1419 to 1436)
• Ospedale degli Innocenti (from 1419 to around 1445)
• Basilica of San Lorenzo (from 1419 to the 1480s)
• Meeting Hall of the Palazzo di Parte Guelfa (from the 1420s to 1445)
• Sagrestia Vecchia, or Old Sacristy of San Lorenzo (from 1421 to 1440)
• Santa Maria degli Angeli: unfinished (begun in 1434)
• Lantern of Florence Cathedral (from 1436 to around 1450)
• Exedrae of Florence Cathedral (from 1439 to 1445)
• Church of Santo Spirito (from 1441 to 1481)
• Pazzi Chapel (from 1441 to the 1460s)