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The Mona Lisa is painted on a poplar panel just 77 cm tall, not canvas
Leonardo painted the Mona Lisa on a single thin panel of poplar wood, not on canvas, which is why it warped and needed framing support.
Most famous paintings people picture in museums are oil on canvas, but the Mona Lisa is not one of them. Leonardo da Vinci painted it on a single, thin panel of poplar wood, a material common in Italian panel painting of the period. The wood itself is part of why the picture has such a complicated physical history. [1][2]
Why wood, not canvas
In Leonardo's Florence, wood panels were the standard support for smaller, highly finished paintings, while canvas was cheaper and more common for large altarpieces. Poplar was widely available in Italy and relatively light, so it was a frequent choice for portraits. Leonardo worked on a single plank rather than joining several boards, which left the whole surface vulnerable if that one piece of wood moved. [2][3]
Wood reacts to changes in humidity by expanding and contracting, and a thin panel with no flexible give tends to warp or crack. The Mona Lisa's panel shows this: a visible crack runs down from the top, and the painting has long required structural support. It is now held in a frame that helps prevent the panel from flexing further. [1][4]
A long, eventful life for a plank
- c. 1503–1517
Leonardo works on the portrait, apparently carrying it with him over years rather than delivering it.
- 1518–1519
The painting is recorded in France, linked to Leonardo's final years and the French court.
- 1793
It enters the Louvre's collection after the revolutionary opening of the royal art collections to the public.
- 1911
Vincenzo Peruggia steals the painting from the Louvre; it is recovered in 1913.
- 1956
An acid attack and a rock thrown at the painting damage its surface, prompting stricter protection.
- 1974–present
It travels rarely and is displayed behind protective glazing in a climate-controlled setting.
The theft made the Mona Lisa globally famous, but the panel has shaped its care just as much. Because wood responds to its surroundings, conservators keep the painting in stable conditions and avoid unnecessary movement. That is a key reason it almost never leaves the Louvre. [4][5]
So the next time the smile gets all the attention, remember the object underneath it: a thin, roughly 500-year-old piece of poplar that has survived theft, vandalism and centuries of climate shifts. [1][2][4]
Sources
- Leonardo da Vinci, Mona Lisa Musée du Louvre
- Mona Lisa Encyclopaedia Britannica
- Leonardo da Vinci (1452–1519) The Metropolitan Museum of Art
- How the Mona Lisa was stolen Smithsonian Magazine
- The Theft That Made the Mona Lisa Famous NPR
