Milan, around 1490. In the stables near the ducal palace, a gigantic clay horse stands under a makeshift roof. It is taller than the men who work around it, its flanks smoothed by countless hours of Leonardo da Vinci’s hands. This is to be the largest bronze equestrian monument the world has ever seen: a tribute to Francesco Sforza, the duke’s father, and a statement that Milan is no provincial backwater but a Renaissance power.
Leonardo, court painter, engineer, impresario of spectacles, has been sketching horses obsessively for years. In his notebooks, they rear, gallop, twist mid-battle. He writes that a horse must be drawn “as if made of glass”, every muscle understood from within. The great clay model in the yard is his masterpiece-in-waiting, forty years of Sforza pride compressed into one animal.
Then politics—and gunpowder—intervene. In 1494, the French invade Italy. Bronze reserved for Leonardo’s horse is suddenly needed for cannons. Years later, when French soldiers occupy Milan, they reportedly use the colossal clay horse as target practice. The project dies not by artistic failure, but by artillery.
What’s fascinating is how this “lost” monument haunts Leonardo’s other work. His studies of horses feed into battle scenes and rearing figures; his sense of unstable balance, of bodies about to move, turns up in everything from the Adoration of the Magi to his endlessly revised projects for equestrian statues. The unfinished horse becomes a kind of ghost in his career: a reminder that even geniuses work under the weather of politics and war.
If you’d like to trace how an idea survives across drawings and paintings, our guide How to Read a Painting (in 7 Steps) pairs well with Leonardo’s notebooks. For more on techniques like clay modelling and bronze casting, stroll through the Glossary of Art Techniques. And if Rembrandt’s sly homage above intrigues you, visit Rembrandt’s Bankruptcy — and a Self‑Portrait’s Quiet Defiance next.
Leonardo’s giant horse never trotted into the Milanese streets—but its shadow still gallops quietly through art history, and now, through your Sunday.