Renaissance

The Last Supper

It's not a fresco — Leonardo painted it in tempera and oil directly on a dry plaster wall, an experimental technique that started flaking within 20 years of completion.

Leonardo da Vinci · 1490

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Santa Maria delle Grazie, Milan

In 1652, monks cut a doorway through the bottom of the mural to improve access to the kitchen, destroying Christ's feet in the process — a decision that still makes art historians wince.

Highlights

Facts & legends

It's not a fresco — Leonardo painted it in tempera and oil directly on a dry plaster wall, an experimental technique that started flaking within 20 years of completion.
In 1652, monks cut a doorway through the bottom of the mural to improve access to the kitchen, destroying Christ's feet in the process — a decision that still makes art historians wince.
Napoleon's troops used the refectory as a stable and threw bricks at the apostles' faces for target practice; the room was later used as a prison and a hay storehouse.
During World War II, a British bomb destroyed the refectory roof and three walls in 1943, but the mural survived — protected by sandbags the Italians had piled around it.
Infrared reflectography scans in the 1990s revealed that Leonardo originally painted the apostles with more extreme expressions and repositioned several hands during the work — you can see his pentimenti (second thoughts) beneath the surface.
The 21-year restoration completed in 1999 cost roughly 7 million dollars and stripped away centuries of repaints, revealing colors so vivid — peacock blues, coral oranges — that some scholars initially refused to believe they were original.

Source: Wikidata

More details A room extended by paint: how Leonardo's experiment nearly destroyed the masterpiece and helped it survive a bombing.

The instant after the words

Not a peaceful meal but a wave of reactions

Leonardo chose the second after Christ says that one of the apostles will betray him. The sentence has been spoken, but its meaning is still travelling along the table. The apostles break into four groups of three: James the Greater spreads his arms, Philip presses his hands to his chest, Thomas raises a finger and Matthew reaches towards Christ while turning to his neighbours. Twelve distinct reactions turn doctrine into recognisable human behaviour.

Christ remains still at the centre. His body forms a stable triangle, his head meets the perspective's vanishing point and the window behind him creates a halo without a painted disc. Judas is not isolated on the far side of the table, as in many earlier Last Suppers. He sits among the others but recoils, grips the purse and knocks over the salt. Gesture, shadow and distance reveal him without a label.

The seating order is fixed in Leonardo's preparatory studies and in the earliest copies by his pupils: left to right, Bartholomew, James the Less and Andrew — who throws up both palms, not yet believing what he has heard — then the tight cluster of Judas, Peter and John, then Christ, followed by Thomas with his finger raised, James the Greater, Philip, and finally Matthew, Thaddaeus and Simon closing the table. The symmetry is deceptive: the men are grouped in twos and threes, yet no two poses repeat, and the eye is forced to cross the table as unevenly as the news itself is spreading down it.

Painting the real room

The illusion began at the friars' own tables

The mural was made around 1495–1498 for the Dominican refectory of Santa Maria delle Grazie in Milan, within a project associated with Ludovico Sforza. The monks ate in the long room whose north wall Leonardo opened into another painted dining hall. Coffered ceiling, wall hangings and table lines continue the real architecture. Painted light comes from the left, matching the windows that illuminated the room in Leonardo's day.

The vanishing point lies about four metres high by Christ's right temple. Leonardo adjusted strict perspective so a viewer below could still see tabletop, hands and objects. Beyond three windows, warm figures give way to cool blue-green mountains, creating aerial depth. The device makes the scene both an extension of a particular building and a landscape without walls, anticipating the atmospheric distance of the Mona Lisa.

The wall painting covers the entire end wall of the room, roughly 460 by 880 centimetres — Leonardo's largest work apart from the ceiling of the Sala delle Asse in the Sforza castle. Duke Ludovico Sforza was rebuilding Santa Maria delle Grazie as a dynastic mausoleum and had Bramante remodel the apse at almost the same moment Leonardo was painting the refectory: architecture and image were meant to advertise the same dynasty together. The monks got their familiar daily scene of the Last Supper, but at a scale that turned their own meal into a continuation of it, not a distant biblical memory.

An experiment with a price

Why Leonardo rejected dependable fresco

True fresco requires rapid painting on wet plaster. Leonardo preferred to return to faces, alter gestures and build translucent tones slowly. He levelled the wall with a white preparation and painted on the dry surface with a tempera-like, oily binder, treating masonry almost like a wooden panel. This enabled revision and refined light, but the colour sat on the wall rather than becoming part of the plaster.

The cost appeared almost immediately. Antonio de Beatis noted decay in 1517, and Vasari described a blurred stain in 1568. Moisture, refectory dust and the unstable method lifted pigment. A doorway cut through Christ's feet in 1652; the room later served as storage and a stable, while restorers repainted losses according to their own periods. What survives is not an untouched 1498 surface but Leonardo's remaining particles inside five centuries of damage and attempted rescue.

Care did more damage than war ever managed. In 1726 Michelangelo Bellotti filled the losses with tempera and coated the whole scene in oil, burying the original surface under his own varnish. In 1770 Giuseppe Mazza scraped that layer off with an iron tool and washed the wall with caustic soda, mistaking the mural for a true fresco; complaints got him removed from the job. The low point came in 1821, when restorer Stefano Barezzi tried to lift the picture off the wall as if peeling a fresco, then, realising his error, glued the flaking paint back down and patched the gaps with coloured stucco. Only in the 1850s, working more carefully, did the same Barezzi undo some of his own damage.

The wall that survived war

In August 1943 the building collapsed around it

Before the Second World War the mural was screened by sandbags and protective structures. On the night of 15 August 1943 an air raid destroyed the roof and much of the refectory. Vaults and the east wall collapsed, while the wall of the Last Supper and Montorfano's Crucifixion opposite remained standing. Photographs of the roofless room made survival look miraculous, although planned protection was crucial. The wall then had to be dried and stabilised before visitors returned.

The longest restoration, led by Pinin Brambilla Barcilon, ran from 1977 to 1999. Conservators removed later repaint, secured material attributable to Leonardo and left gaps quiet rather than disguising conjecture as original paint. Today's air locks, filtered climate and short, limited visits continue that work. The fifteen minutes in the refectory are not theatrical scarcity: every body adds humidity and particles to one of the most vulnerable famous images in the world.

Access today is built like an airlock, not a gallery. Visitors enter in groups of up to forty for fifteen minutes at a time, after passing through several climate-controlled anterooms that let their body heat and humidity equalise with the chamber before the door to the mural opens. Tickets are sold for a specific slot months in advance; the queue familiar from other Milan museums is physically impossible here, because the humidity swing from one extra group could undo what conservators have only barely stabilised.

After Leonardo

Copies, parodies and codes

The original's fragility gives early copies exceptional value. Versions made in Leonardo's circle, including the monumental copy at London's Royal Academy, preserve vanished details: glassware, patterned dishes, folds and Christ's feet before the doorway. Prints carried the composition across Europe. From Tintoretto to Andy Warhol and staged photographs, the long table, central figure and community at the instant of rupture became a reusable visual formula.

Popular culture repeatedly turns each gesture into a secret code, yet the picture needs no conspiracy. Peter's knife anticipates the severed ear in Gethsemane; Judas's purse marks the payment for betrayal; Thomas's raised finger foreshadows his doubt. The clues belong to a coherent account of character and sequence. Leonardo's achievement was to show how a single sentence reorganises an entire room. Even in its damaged state, the mural remains one of art's most precise images of collective shock.

The most unexpected echo came in the final year of Andy Warhol's life. Between 1984 and 1986 he made close to a hundred variations on the composition — silkscreens and paintings, some overlaid with the logos of General Electric and Wise potato chips above the apostles' heads. Part of the series went on view in Milan in January 1987, in a gallery across from Santa Maria delle Grazie; Warhol died weeks later. A five-hundred-year-old refectory wall had produced his last finished body of work.

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