Mona Lisa

• 1. Introduction

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  The Mona Lisa is a half-length oil portrait painted by the Italian artist Leonardo da Vinci. One description calls it 'the best known, the most visited, the most written about, the most sung about, and the most parodied work of art in the world.' It hangs today behind bulletproof glass in the Louvre in Paris. In 1962 it was insured at one hundred million dollars, a Guinness World Record valuation worth roughly a billion dollars today.

  Yet the woman in the frame is not fully identified. She has long been presumed to be Lisa del Giocondo, wife of a Florentine silk merchant, though her likeness remains uncertain. Leonardo began the portrait around 1503 and may have kept refining it for over a decade. He never delivered it to the family thought to have commissioned it. King Francis I of France acquired the painting after Leonardo's death in 1519, and it has stood in the Louvre since 1797.

  Its fame did not arrive with the brushstrokes. A 1911 theft turned an obscure court portrait into a household name, and that single crime still shapes how the world sees her today. What made a small, unfinished, half-anonymous portrait into art's most recognizable face? Who is the woman behind the soft-edged smile? And how has a five-hundred-year-old panel of poplar wood survived war, theft, vandalism, and the crush of modern fame?

• 2. The Identity Question

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  Giorgio Vasari, the Renaissance biographer, wrote that 'Leonardo undertook to paint, for Francesco del Giocondo, the portrait of Mona Lisa, his wife.' Vasari published that account in 1550, thirty-one years after Leonardo died, and it became the standard explanation for who the painting shows. Monna is a polite Italian form of address, descended from ma donna, the root of madonna and later monna. In Italian the painting's title is spelled Monna Lisa, since mona is considered vulgar there. English has traditionally kept the shorter spelling, Mona, even though Monna is more historically accurate.

  Lisa del Giocondo, the presumed sitter, belonged to the Gherardini family of Florence and Tuscany. She married Francesco del Giocondo, a wealthy silk merchant. The portrait is thought to have been commissioned for their new home, and to mark the birth of their second son, Andrea. The Italian title, La Gioconda, plays on Lisa's married name and means roughly 'happy' or 'jovial,' and the French title, La Joconde, carries the same pun. Leonardo's own assistant, Salaì, owned a painting called la Gioconda when he died in 1524, a work Leonardo had left to him.

  In 2005, a scholar at Heidelberg University found a clue buried in an old book. Inside a 1477 printing of a work by the Roman philosopher Cicero, the scholar discovered a marginal note dated October 1503. Leonardo's contemporary, Agostino Vespucci, had written it, comparing Leonardo to the famed Greek painter Apelles and noting that Leonardo was at that moment painting Lisa del Giocondo. Louvre curator Vincent Delieuvin called the find important but incomplete: 'About this we are now certain. Unfortunately, we cannot be absolutely certain that this portrait of Lisa del Giocondo is the painting of the Louvre.'

  A 2019 catalogue raisonné on Leonardo da Vinci names Lisa del Giocondo as the likely sitter, listing Isabella d'Este as the only other serious candidate. Other scholars have floated many more names over the years, including Isabella of Aragon, Cecilia Gallerani, Costanza d'Avalos, Pacifica Brandano, Isabella Gualanda, Caterina Sforza, Bianca Giovanna Sforza, and even Salaì or Leonardo himself. Sigmund Freud offered a different theory, suggesting Leonardo painted his mother Caterina's smile into the portrait, along with works such as The Baptism of Christ and Virgin of the Rocks.

  Her identity may never be settled, but Leonardo's brushwork raises questions all its own.

• 3. Anatomy of an Illusion

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  The woman in the portrait sits upright in a pozzetto armchair, her arms folded across her body, a posture Renaissance viewers would have read as reserved. Her gaze holds steady on the observer no matter the angle. Leonardo achieved that effect partly by refusing to draw hard outlines around her features, a technique called sfumato. The soft blending shows up mainly in two places: the corners of her mouth, and the corners of her eyes.

  Her three-quarter profile echoes late 15th-century work by painters Lorenzo di Credi and Agnolo di Domenico del Mazziere. Art historian Frank Zöllner traces the pose, and even the vertical column slices flanking the panel, back to earlier Flemish portraiture. Scholar Woods-Marsden points to Hans Memling's 1487 portrait of Benedetto Portinari as a possible model for the loggia setting, a device that bridges the sitter and the landscape behind her, missing from Leonardo's earlier portrait of Ginevra de' Benci.

  Leonardo placed the horizon at eye level rather than at the neck, as he had for Ginevra de' Benci, tying the woman more closely to the scenery behind her. That landscape recedes into icy mountains, a winding path, and a distant bridge, painted with an early use of aerial perspective. Researcher Silvano Vincenti identified the bridge as the four-arched Romito di Laterina, a structure from Etruscan-Roman times near Laterina, Arezzo, spanning the Arno river. Other candidate bridges had more arches, and some observers instead see similarities to the Azzone Visconti Bridge.

  Psychologists have named a visual effect after her: the Mona Lisa illusion. Anyone looking at the portrait feels watched by her eyes, no matter where they stand in the room. Analysts have also mapped golden triangles and a golden spiral onto the composition. The spiral begins at her right wrist, traces up to the crown of her head, and converges at the tip of her nose. Biographer Walter Isaacson notes there is little evidence Leonardo built the golden ratio into the painting on purpose.

  Whatever guided Leonardo's hand, the paint itself still hides more than geometry.

• 4. Secrets Beneath the Surface

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  Mona Lisa has no visible eyebrows or eyelashes, even though Vasari's account describes her eyebrows in detail. In 2007, French engineer Pascal Cotte announced that his own scans had solved part of the puzzle. His ultra-high-resolution imaging showed she was originally painted with both features, which had faded over time, possibly through overcleaning. The same scans revealed the painting had been reworked more than once, with Leonardo adjusting the size of her face and the direction of her gaze.

  One buried layer, Cotte found, showed the sitter wearing a headdress trimmed with pearls and several hairpins, later scrubbed out and painted over. Cotte went further using reflective light technology from 2004 onward, arguing for a hidden portrait underneath the visible one, of a sitter looking to the side with no flanking columns. Cotte admitted the evidence was circumstantial rather than proof. The hidden figure also does not match historical descriptions, since both Vasari and Gian Paolo Lomazzo describe the known subject as smiling. In 2020, Cotte published a further study claiming the painting carries an underdrawing, transferred using the spolvero technique.

  Historians have also puzzled over how faithfully Leonardo rendered his sitter's looks. Her beauty is not considered exceptional, 'even when measured by late quattrocento or even twenty-first century standards.' Art historian Yukio Yashiro argued that the background landscape shows Chinese influence, a claim other scholars have contested for lack of clear evidence.

  In 2003, Harvard professor Margaret Livingstone found that the famous smile disappears when a viewer looks directly at the mouth, because central vision reads shadow poorly while peripheral vision picks it up far better. A 2008 study by a geomorphology professor at Urbino University matched the landscape to views in the Montefeltro region, spanning Pesaro, Urbino, and Rimini. Geologist and art historian Ann Pizzorusso proposed in 2023 and 2024 that the scenery instead resembles Lecco, on the shores of Lake Como in Lombardy.

  Every one of these theories rests on a single panel that Leonardo may never have finished at all.

• 5. Four Centuries of Doubt

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  Only four Leonardo paintings carry undisputed attribution, and the Mona Lisa is one of them, alongside Saint Jerome in the Wilderness, Adoration of the Magi, and The Last Supper. Even so, when Leonardo actually finished it remains contested. Vasari claimed Leonardo 'lingered over it four years' before leaving it 'unfinished.' Art historian Martin Kemp says the surrounding dates are hard to pin down with certainty.

  Alessandro Vezzosi argues the painting's style matches Leonardo's late period, after 1513, and other academics likewise date most of the work to that later year based on the historical record. In 1516, King Francis I invited Leonardo to work at the Clos Lucé, near the Château d'Amboise, and Leonardo is believed to have brought the Mona Lisa with him and kept working on it there. Historian Carmen C. Bambach concludes Leonardo likely kept refining the panel until 1516 or 1517. Around that time his right hand became paralytic, a condition that may explain why the painting stayed unfinished.

  Around 1505, Raphael made a pen-and-ink sketch of the composition that shows the flanking columns far more clearly than the painting does today. Later copies, including ones now in the National Museum of Art, Architecture and Design and the Walters Art Museum, also show large columns, and historians once assumed from this that the Louvre panel had been trimmed down. Frank Zöllner found in 1993 that the surface had never been cut, a conclusion a 2004 round of tests confirmed. Louvre curator Vincent Delieuvin now argues Raphael's sketch and the other copies must draw on a separate version of the portrait.

  A record of an October 1517 visit describes the Mona Lisa as painted for Giuliano de' Medici, likely a mistaken account, while Vasari instead names the sitter's husband, Francesco del Giocondo, as the commissioner. The confusion has led some experts to argue Leonardo made two separate versions: one begun around 1503 for Giocondo and left with his pupil Salaì until Salaì's death in 1524, and a second, commissioned around 1513 by Giuliano de' Medici, later sold by Salaì to Francis I in 1518. After Leonardo's death, the panel picked up a coat of varnish sometime in the 16th century. It was kept at the Palace of Fontainebleau, then moved to the Palace of Versailles under Louis XIV, where it stayed until the French Revolution.

  That upheaval would soon expose the panel to a public far larger, and far less careful, than any French king.

• 6. Theft, Attacks, and Survival

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  After the French Revolution, the panel moved to the Louvre but spent a stretch in Napoleon's bedroom at the Tuileries Palace, before his death in 1821. It was still not widely recognized outside the art world at that point. During the Franco-Prussian War, fought from 1870 to 1871, the painting was evacuated from the Louvre to the Brest Arsenal for safekeeping.

  On the 21st of August 1911, the painting disappeared from the Louvre. Its absence went unnoticed until the next day, when painter Louis Béroud reported it missing. The Louvre shut for a full week to investigate. Suspicion briefly fell on French poet Guillaume Apollinaire, who was arrested and jailed, and Apollinaire implicated his friend Pablo Picasso, who was brought in for questioning. Both men were later cleared.

  The actual thief was Vincenzo Peruggia, a Louvre employee who had helped build the painting's glass case. He walked in during ordinary opening hours, hid inside a broom closet until the museum closed, then carried the panel out under his coat. Peruggia was an Italian patriot who believed the painting belonged in an Italian museum rather than a French one. He may also have been encouraged by an associate whose forged copies stood to gain value once the original vanished.

  Peruggia kept the painting in his apartment for two years before growing impatient, and was caught trying to sell it to Giovanni Poggi, director of Florence's Uffizi Gallery. The Uffizi displayed the recovered panel for over two weeks before it returned to the Louvre on the 4th of January 1914. Peruggia served six months in prison and was celebrated as a patriot back in Italy. A year later, Saturday Evening Post journalist Karl Decker claimed to have met an alleged mastermind named Eduardo de Valfierno. Valfierno said forger Yves Chaudron had produced six copies meant for sale in the United States while the original stayed hidden. Decker published the story in 1932.

  On the 28th of August 1939, just before World War II began, the Louvre moved the painting again, first to the Château d'Amboise, then the Loc-Dieu Abbey and the Château de Chambord, and finally to the Musée Ingres in Montauban. That journey kept it out of the art Nazi Germany looted during its occupation of France. Since the 1990s, museum renovations have sent it into temporary storage three more times: from 1992 to 1995, from 2001 to 2005, and again in 2019.

  On the 30th of December 1956, a Bolivian man named Ugo Ungaza Villegas threw a rock at the painting. It shattered the glass case and knocked a speck of pigment loose near the left elbow. That glass had been added a few years earlier, after a man claiming to love the painting cut it with a razor blade and tried to steal it. The 1956 attack prompted Salvador Dalí to write an essay in 1963 titled 'Why they attack the Mona Lisa,' drawing on Freud's earlier theories about the sitter.

  On the 21st of April 1974, while on loan to the Tokyo National Museum, a woman sprayed the painting with red paint, protesting the museum's lack of access for disabled visitors. Bulletproof glass, installed after the 1956 rock attack, has kept every later assault from touching the paint itself. On the 2nd of August 2009, a Russian woman upset over a denied French citizenship application threw a ceramic teacup she had bought at the Louvre, shattering it against the glass. In 2022, an activist disguised as a wheelchair user threw cake at the case to protest climate change, and in January 2024, two environmentalist protesters threw soup at it while demanding 'healthy and sustainable food.'

  Every collision with the glass has left the case scarred rather than the painting, evidence of decades spent engineering a box strong enough to keep her safe.

• 7. Keeping Her Alive

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  An international commission that examined the Mona Lisa in 1952 concluded that 'the picture is in a remarkable state of preservation.' The painting has never been fully restored. A 1933 analysis by Madame de Gironde found that earlier restorers had 'acted with a great deal of restraint.' Even so, an aggressive 1809 cleaning and revarnishing stripped away some of the top paint layer, leaving the face with a washed-out look that persists today.

  The poplar panel was removed from its original frame at some point in its history. Left unconstrained, it warped freely with changes in humidity, opening a crack near the top that runs down to the figure's hairline. Sometime between the mid-18th and early 19th centuries, restorers inserted two butterfly-shaped walnut braces into the back of the panel, cut to about a third of its thickness, successfully stabilizing the crack. One of those braces fell out sometime between 1888 and 1905, possibly during the 1911 theft, and a later restorer glued cloth over the resulting socket.

  In 1951, ahead of an exhibition marking the 500th anniversary of Leonardo's birth, conservators fitted the panel with a flexible oak frame and beech crosspieces, meant to counter warping the panel had suffered during wartime storage. Insects forced a switch from beech to maple crosspieces in 1970. A 2004-05 conservation team later replaced those with sycamore, adding a metal crosspiece purely to measure the panel's warp for research. The current decorative frame, a Renaissance-era piece, was a gift from art collector Comtesse de Béhague in 1909.

  Restorer Jean-Marie Hooghstoel carried out the painting's first major cleaning in 1809, washing it with spirits and touching up colour before revarnishing it. Louvre restorer Eugène Denizard later retouched crack damage with watercolour in 1906, and returned to the task in 1913, right after the painting's return from theft, this time cleaning without solvent. After the 1956 rock attack, restorer Jean-Gabriel Goulinat touched up the damaged left elbow with watercolour. Insect infestations in the panel's back were treated with chemical fumigants in 1977 and again in 1985.

  The panel now sits inside a purpose-built, climate-controlled enclosure in the Louvre's Salle des États, a space it moved into on the 6th of April 2005. Humidity inside stays at 50 percent, give or take 10, while temperature holds between 18 and 21 degrees Celsius, backed by a bed of silica gel tuned to 55 percent relative humidity. A 20-watt LED lamp installed in 2013 lights the painting while filtering out damaging infrared and ultraviolet light, part of a gallery renovation funded partly by Japanese broadcaster Nippon Television.

  Around 10.2 million people a year filed past the painting as of 2019. A new queuing system introduced that year cut the wait, though each group still gets only about 30 seconds in front of the glass. In 2024, the Louvre announced plans to move the panel into its own separate room, a project requiring a new museum entrance and two basement galleries beneath the courtyard, built specifically to shorten the crowds gathering for one 500-year-old panel of poplar.

  That level of care could not stop the painting from turning into one of the most reproduced and parodied images in art history.

• 8. Becoming an Icon

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  Raphael visited Leonardo's workshop while the portrait was still underway and began borrowing its composition almost immediately, reusing it in his own Young Woman with Unicorn, around 1506, and Portrait of Maddalena Doni the same year. He returned to it again in La velata, painted around 1515-16, and Portrait of Baldassare Castiglione, around 1514-15. Art historian Frank Zöllner argues that no other Leonardo work shaped the portrait genre as much, calling it 'the definitive example of the Renaissance portrait.'

  Vasari in the 16th century and André Félibien in the 17th both praised the painting mainly for its realism. That reading shifted by the mid-19th century, when writers began treating the portrait as mysterious and romantic instead. In 1859, French writer Théophile Gautier called her a 'sphinx of beauty who smiles so mysteriously.' In 1869, critic Walter Pater went further, describing the sitter as 'older than the rocks among which she sits,' someone who had 'been dead many times' and learned 'the secrets of the grave.'

  When the Mona Lisa was stolen in 1911, Renaissance historian Bernard Berenson admitted the loss felt like a relief, calling the painting 'an incubus' he was 'glad to be rid of.' That same year, critic Louis Vauxcelles mocked painter Jean Metzinger's cubist work Le goûter as 'la Joconde à la cuiller,' or Mona Lisa with a spoon, in the newspaper Gil Blas. Writer André Salmon went further, dubbing that same painting 'The Mona Lisa of Cubism.'

  Marcel Duchamp escalated the joke in 1919 with L.H.O.O.Q., a cheap reproduction fitted with a drawn moustache and goatee. Read aloud in French, the letters he added sound like a crude phrase suggesting the sitter is sexually excited, a deliberate Freudian jab. Decades later, Salvador Dalí painted himself into the role in his 1954 Self Portrait as Mona Lisa. After the painting's 1963 visit to the United States, Andy Warhol produced a set of serigraph prints titled Thirty Are Better than One, and the French street artist known as Invader has since installed mosaic versions of her face on walls in Paris and Tokyo.

  An 1878 Baedeker guide called the painting merely 'the most celebrated work of Leonardo in the Louvre,' a line aimed at art insiders rather than casual visitors. A 1910 article in Ladies' Home Journal went further, naming it 'the most famous portrait in the world.' That magazine had itself become the first American publication to reach a million subscribers, back in 1903.

  The 1911 theft did more for the painting's global recognition than any critic's praise had managed. By one account, it turned the work from 'just another Leonardo' into a picture with a permanent spotlight. Over the following decades it was copied so often that one estimate put its reproductions at roughly 300 paintings and 2,000 advertisements.

  Between December 1962 and March 1963, the French government sent the painting across the Atlantic aboard the new ocean liner SS France, for exhibitions in New York and Washington, D.C. An estimated 1.7 million people lined up in New York for a look lasting about 20 seconds. While the painting hung at the Metropolitan Museum of Art, a faulty sprinkler nearly soaked it before the bulletproof case stopped the water. The Louvre drew 9.3 million visitors in 2014, and former director Henri Loyrette estimated that '80 percent of the people only want to see the Mona Lisa.'

  The Louvre never actually purchased an insurance policy for the painting's 1962 valuation, choosing instead to spend the money on security, and that original figure is now reckoned at roughly $1.08 billion. A 2014 proposal in the French press suggested selling the painting to help ease the national debt. French heritage law blocks that outright: 'Collections held in museums that belong to public bodies are considered public property and cannot be otherwise.'

  German composer Max von Schillings wrote the 1915 opera simply titled Mona Lisa. Ray Bradbury added his own take in 1952 with the short story 'The Smile,' later collected in his 1959 book A Medicine for Melancholy. David Allan Coe recorded 'Mona Lisa Lost Her Smile' in 1984, Panic! at the Disco released 'The Ballad of Mona Lisa' in 2011, and Lil Wayne put out his own song titled 'Mona Lisa' in 2018. The 2022 film Glass Onion: A Knives Out Mystery imagines a billionaire borrowing the painting and then destroying it, Lego issued a 1,503-piece Mona Lisa set under its Lego Art line, and the 2024 Summer Olympics opening ceremony staged a fictional theft of the painting by the Minions, who left it floating in the Seine.

  A version at Madrid's Prado Museum, long attributed to Leonardo himself, was reassessed after a 2012 restoration and is now believed to have been painted by one of his own pupils, possibly Salaì or Melzi, working in the same studio while Leonardo made the original. The Isleworth Mona Lisa, bought by an English nobleman in 1778 and rediscovered in 1913 by connoisseur Hugh Blaker, was presented to the public in 2012 by the Mona Lisa Foundation, though scholars remain split on whether Leonardo had any hand in it. A third version, the Hermitage Mona Lisa, sits in Saint Petersburg's Hermitage Museum, painted by an artist whose name has never been identified.