Saype Paints 18,000-Square-Meter Grass Murals, Then Films Them Fade

Saype, the Franco-Swiss land artist born Guillaume Legros, has completed his twenty-third monumental mural worldwide—a project in San Francisco, his second U.S. location after Minneapolis—and between 2027 and 2030 he plans an American chapter of his "Beyond Walls" series across roughly a dozen cities. Each of his site-specific works spans between 1,000 and 18,000 square meters, takes two years to prepare, four to five days to paint, and fades within one to two weeks. A 4 kg DJI Inspire 2 with a 16 mm lens preserves what nature erases.

For practitioners, the most instructive detail is his claim of originality. "In the history of art, I haven't found anyone who has produced what I do. I've looked," he says, acknowledging the Lascaux caves as a distant precedent but not one of comparable scale or logic. He paints grass, snow, sand and laterite with a paint he invented himself—100% biodegradable, built from charcoal, chalk, casein and on-site materials, with "a thousand different recipes" depending on location and weather.

How did a former nurse become a land artist?

Saype began painting at fourteen, drawn to street art, Claude Monet and J.M.W. Turner. At eighteen he told his mother he wanted to be an artist; she answered, "No way, find a real job." He spent a decade in environmental science and nursing before the 2012 turning point, when he reasoned that making a living from art required inventing something that stood out—his own biodegradable paint. He tested around fifty pigments, studied traditional recipes and documentaries, and developed a spray method using industrial compressors.

The approach paid off immediately. His first work, "L'Amour," a 1,600-square-meter woman's torso blending hyperrealism and Impressionism, appeared in 2015 in the French Alps and drew instant media coverage. He left public health in 2016 and spent three years refining the technique.

What does the drone work actually involve?

The aerial practice is as engineered as the paint. He maps each site on Google Earth, then flies an initial drone survey to fix sightlines, elevation, GPS coordinates and ground markers. He builds a small anamorphosis—stakes placed every fifteen meters across a large square—to establish proportions and vanishing lines. He calculates pigment quantities with a 50% margin of error, and he shoots with lighting logic: "If the child in the drawing is looking at the horizon, I'll be more likely to choose a sunset."

His equipment history will sound familiar to anyone who started flying in the early 2010s: a DJI Phantom 1 with a GoPro taped underneath, no live video feed, burst shots fired blind. Today an assistant handles the Inspire 2's controls while he frames. He limits AI to site research and administrative tasks.

What are the economics and the failures?

Initial investment runs roughly €50,000 per project in equipment and paint, plus ten compressors at €10,000 each. He works with a four-person team: two childhood-friend production assistants, a strategy manager and a project manager. "Beyond Walls"—the world's largest human chain, launched in 2019—is self-funded, as are his 10,000-square-meter water lily mural in Giverny for the centennial of Monet's death and a piece for Handicap International's 30th anniversary in Gurten Park, Switzerland. A six-year contract with the Swiss resort Villars-sur-Ollon, 1,300 meters above Lake Geneva, anchors the professional side.

The Brazil chapter of "Beyond Walls" nearly collapsed. After a year negotiating with UNESCO and Rio's mayor for five days on Copacabana beach—symbolically bridging Benin, the departure point for slave ships—rain destroyed two physically grueling days of work on a 6,000-square-meter design. The washout triggered a pigment shortage across three planned Brazilian stages. He cut the surface to 1,500 square meters, divided it into four parts, and finished in a single day.

This year he entered cinema: a 2,000-square-meter mural of a human hand reaching toward a dog's paw in the pastures of Beaufortain, Savoie, appears in David Ayer's Heart of the Beast, starring Brad Pitt, made with Paramount. He chose Savoie for its resemblance to the film's Alaska—a landscape with no human infrastructure.

Since 2023 he has also left physical traces: 50×50 cm paper squares placed under the paint before the final photographs, removed to become one-of-a-kind "pixels" sold to collectors, alongside signed prints at 40×60 cm and 120×80 cm.

Where is the work heading next?

His next destination is Montgomery, Alabama, facing the State Capitol's 100-by-50-meter park, to address civil rights. He cites Minneapolis—where George Floyd's 2022-era murder sparked Black Lives Matter—as a deliberate starting point, and San Francisco as "the center of the storm" on AI, referencing claims of a more than 10% chance that AI destroys humanity within a decade. Twelve stops over three years begin with two or three murals in 2027, covering Chicago, Austin, Detroit, Los Angeles, New York, St. Louis and Miami. "Land artists will have plenty to say and share about this ever-changing landscape," he says.