The Gothic Marvel: 15 Fascinating Facts About the Milan Cathedral

1. Construction Took Nearly Six Centuries and Inspired a Local Saying

Construction on the Milan Cathedral officially began in 1386 under Duke Gian Galeazzo Visconti and was not formally completed until 1965. Spanning nearly six hundred years, the monumental building project witnessed the rise and fall of empires, shifting artistic styles, and countless generations of stonemasons. Because the cathedral remained under perpetual construction for so long, locals in Milan developed a famous idiom for any task that seems to go on forever: "like the Fabbrica del Duomo." The endless labor was directed by a dedicated institution established in 1387 that still maintains and repairs the edifice today. Remarkably, despite the centuries of changing tastes, the overall Gothic vision remained surprisingly cohesive throughout its long history.

2. It Holds the World Record for the Most Statues on a Single Building

The Milan Cathedral is world-renowned for its astonishing array of sculpted stonework, boasting more statues than any other building on Earth. The exterior and interior are adorned with approximately 3,400 statues, along with 135 spires, 130 gargoyles, and over 700 marble reliefs. These sculpted figures represent an eclectic mix of biblical prophets, Christian saints, historical figures, and fantastical mythical beasts. Walking around the facade reveals intricate artistic craftsmanship from different centuries, creating an overwhelming forest of marble figures. Maintaining this immense collection requires a dedicated team of contemporary sculptors who continuously restore damaged statues in dedicated workshops.

3. A Facade Statue Likely Inspired the Statue of Liberty

High on the facade of the Milan Cathedral stands a sculpture titled La Legge Nuova (The New Law), created by Italian artist Camillo Pacetti in 1810. The statue features a majestic woman wearing a crown with radiating rays while holding a torch in her right hand and a tablet in her left. Sculptor Frédéric-Auguste Bartholdi visited Milan during the mid-19th century and almost certainly drew heavy inspiration from Pacetti's work when designing the iconic Statue of Liberty for New York City. While Lady Liberty remains one of the world's most famous symbols, her marble predecessor has stood quietly over Milan's main square for decades longer. Comparing the two sculptures reveals striking similarities in their posture, draped robes, and distinctive headpieces.

4. Carvings on the Spires Include Modern Sports Gear

While the cathedral is primarily a masterpiece of religious art, master sculptors over the centuries left behind surprisingly playful touches. High up on the rooftop spires and gargoyles, sharp-eyed visitors can spot unexpected modern objects, including carved tennis rackets and a pair of boxing gloves. These contemporary additions were sculpted during 20th-century restoration work, reflecting the humor and creative freedom allowed to stone artisans. Elsewhere among the roof line, carvings depict animals, historical scenes, and even realistic representations of local Milanese figures. This playful blending of sacred tradition with profane modern life makes exploring the roof spires a treasure hunt for quirky detail.

5. Napoleon Bonaparte Ordered the Completion of the Facade

When Napoleon Bonaparte declared himself King of Italy in 1805, he selected the Milan Cathedral as the grand site for his royal coronation. However, the front facade of the church remained notoriously incomplete after centuries of delayed work and changing plans. Determined to have a spectacular backdrop for his crown, Napoleon ordered the completion of the facade and promised that the French state would pay all expenses. Work proceeded at an unprecedented pace, finishing the main architectural elements of the front portal in just a few short years. Although Napoleon was crowned inside the cathedral in May 1805, the French government ultimately never delivered the full payment it had promised.

6. A Red Lightbulb Marks the Relic of the Holy Nail

Suspended forty meters above the main altar inside the cathedral vault shines a solitary red lightbulb that marks one of Catholicism's most revered relics. The light highlights a small tabernacle containing a nail believed to have been used during the crucifixion of Jesus Christ. According to church tradition, Saint Helena discovered the True Cross and brought the nails back to Rome, with one eventually coming to Milan. The red bulb acts as a perpetual beacon, allowing worshippers and visitors from the cathedral floor to easily locate the sacred object far overhead. The relic remains a central element of Milanese devotion and is honored during special liturgical ceremonies every autumn.

7. The Archbishop Uses a 16th-Century Cloud Elevator

To lower the Holy Nail from its high resting place once a year during the Rite of the Nivola, the Archbishop of Milan uses a historical elevator called the Nivola. Designed in the 16th century—with early structural concepts often credited to Renaissance engineers—the Nivola is a massive, cloud-shaped lift basket made of wood and canvas decorated with paintings of angels. Powered by a system of ropes and pulleys, the lift ascends forty meters to the ceiling vault so the Archbishop can retrieve the Holy Nail for public veneration. The ceremonial descent of the cloud elevator remains one of the most unusual and captivating liturgical traditions in Europe. Today, the mechanical system has been modernized, but the antique decorated cloud structure remains in active annual use.

8. Leonardo da Vinci Submitted a Design for the Central Dome

During the late 15th century, the leaders of the cathedral construction committee held a public competition to design the central cupola, or tiburio. Renowned polymath Leonardo da Vinci entered the competition in 1487, submitting a detailed architectural model and technical drawings. Leonardo proposed an innovative geometric solution designed to distribute the immense weight of the central spire evenly across the existing pillars. However, after months of deliberation and revisions, Leonardo withdrew his proposal, realizing the complex design was perhaps too ambitious for contemporary masonry techniques. The project was ultimately awarded to local architects, though Leonardo's detailed structural studies of the cathedral survive in his notebooks.

9. A Giant Brass Line on the Floor Functions as an Astronomical Sundial

Stretching across the floor near the main entrance of the cathedral lies a brass strip installed in 1786 by astronomers from the nearby Brera Observatory. This long metal line forms a precise solar meridian sundial, designed to standardize timekeeping across Milan before the era of digital clocks. At exact solar noon, a ray of sunlight penetrates a small circular aperture high in a south-facing chapel wall and illuminates a point along the brass line. Next to the metal strip, marble tiles inlaid with zodiac symbols indicate the current month and astrological season based on where the light beam lands. Even centuries after its installation, the meridian line remains functional and surprisingly accurate.

10. The Shocking Statue of Saint Bartholomew Shows Him Wearing His Own Skin

Among the cathedral's inner sculptures, none captures visitors' attention quite like the statue of Saint Bartholomew Flayed, carved by sculptor Marco d'Agrate in 1562. Saint Bartholomew was an early Christian martyr who, according to tradition, was flayed alive for his faith. Rather than depicting him in agony, d'Agrate carved the saint standing proudly like a classical hero, wearing his own flayed skin draped around his body like a toga. The sculptor used the commission to showcase his masterful understanding of human anatomy, rendering every muscle, vein, and tendon with clinical precision. An inscription at the base translates to "I was not carved by Praxiteles, but by Marco d'Agrate," underscoring the artist's immense pride in his anatomical realism.

11. A Golden Statue on the Spire Governs Milan's Modern Skyline

At the highest point of the cathedral's main spire sits the Madonnina, a four-meter-tall gilded bronze statue of the Virgin Mary erected in 1774. For centuries, a strict traditional rule prohibited any building in Milan from being taller than the Madonnina, which stands 108.5 meters above the ground. When modern skyscrapers began altering the city's skyline in the 20th century, architects devised a clever way to respect this historic tradition. Rather than capping their towers below the cathedral height, developers place a small scale replica of the Madonnina at the top of every new skyscraper. As a result, the protective golden statue symbolically remains at the absolute highest elevation of the urban skyline.

12. Milan's Canals Were Built to Transport the Cathedral's Marble

The Milan Cathedral is constructed almost entirely from a rare pinkish-white marble quarried in Candoglia, located near Lake Maggiore over 90 kilometers away. Transporting hundreds of thousands of tons of heavy stone across such distances posed a staggering logistical challenge in the 14th century. To solve this, Duke Gian Galeazzo Visconti ordered the expansion of Milan's famous canal network, known as the Navigli, connecting the quarries directly to the city center. Barges carrying marble blocks were granted tax-free transit marked with the letters "A.U.F." (Ad Usum Fabricae, meaning "for the use of the workshop"). This Latin acronym gave rise to the modern Italian expression a ufo, which means getting something for free.

13. Visitors Can Walk Across the Massive Terraced Marble Roof

Unlike most historic cathedrals, the Milan Cathedral features a fully accessible rooftop terrace constructed entirely from massive marble slabs. Visitors can walk along the elevated pathways, offering up-close views of the 135 delicate spires and thousands of surrounding statues. From this elevated vantage point, visitors can appreciate the breathtaking craftsmanship required to carve even the highest, hidden decorative details of the building. On clear days, the rooftop offers panoramic views stretching across the Lombardy plains all the way to the snow-capped peaks of the Alps. The terrace covers over 8,000 square meters, making it one of the largest rooftop walkways on any religious structure in the world.

14. Allied Bombs Damaged the Building in 1943, But the Core Survived

During World War II, Milan suffered severe air raids by Allied bombers, and in August 1943, high-explosive bombs directly struck the cathedral. The air raids destroyed several heavy bronze doors, shattered historical stained glass windows, and severely damaged the organ and rooftop marble carving. Remarkably, despite heavy impacts on the square and surrounding buildings, the cathedral's central structural vault remained intact and avoided total destruction. Immediately following the end of the war, citizens of Milan rallied around the building to initiate a rapid, comprehensive restoration effort. The restored bronze doors now feature dramatic bas-reliefs that commemorate the suffering and resilience of the city during the war years.

15. It Is the Largest Church in Italy and Italy's Gothic Masterpiece

Measuring 157 meters in length and capable of holding over 40,000 people, the Milan Cathedral is the largest church in the Italian Republic. While Saint Peter's Basilica in Rome is larger, it technically resides within the independent sovereign territory of Vatican City. The Duomo is also unique in Italian architecture, as it represents the only major cathedral in Italy built primarily in the late French-inspired Rayonnant Gothic style. Its construction drew master builders and stonecarvers from France, Germany, and Flanders, creating a fascinating blend of international Gothic design and Italian craftsmanship. Today, it stands as the iconic symbol of Milan and one of the world's greatest architectural achievements.