Standing 22 meters tall with a face covered in thousands of mirrors, Le Cyclop is likely one of the most astonishing works of art in the Île-de-France region. Hidden in the woods of Milly-la-Forêt since the 1990s, this massive head designed by Jean Tinguely attracts thousands of visitors every year, all eager to discover this extraordinary artistic monument.
An extraordinary sculpture just a stone’s throw from Paris
Located in the woods of Milly-la-Forêt, in Essonne, this steel colossus stands nearly 22.5 meters tall and weighs approximately 350 tons. From a distance, it resembles a monumental sculpture. In reality, it is much more than that: Le Cyclop is also a museum, a labyrinth, and a gigantic artistic machine hidden in the middle of the forest.
The history of the site is almost as fascinating as the work itself. It all began in 1969 when Swiss artist Jean Tinguely decided to secretly build this giant head with the help of Niki de Saint Phalle and about fifteen artist friends. For twenty-five years, the project evolved quietly in the woods. Everyone contributed their ideas and creations, making the Cyclop a unique collective work in the history of contemporary art.
What immediately catches the eye is its mirror-covered facade designed by Niki de Saint Phalle. The reflections capture the light and make the giant almost disappear into its surroundings. Depending on the time of day or the season, the Cyclop thus constantly changes its appearance, blending into the foliage or glistening in the sun.

Inside, once through the heavy door, visitors discover a completely off-the-wall world: improbable staircases, sound sculptures, a miniature theater, metal gears, animated machines, and art installations follow one another across several levels. Everywhere, the humor, poetry, and love of recycling so dear to Tinguely are present.
The work notably houses a gigantic Meta-Harmonie, a machine composed of wheels, motors, and metal balls that gradually set the entire Cyclop in motion. The giant ear sways, the mechanisms spring to life, and the monster suddenly seems to come alive.
For years, the construction took shape out of sight, in a spirit of total freedom. The artists worked with salvaged materials, metal parts found here and there, and a healthy dose of imagination.
Less than an hour from Paris, this giant head hidden in the woods remains one of the region’s most unusual getaways. A monumental, strange, and fascinating work of art that you generally don’t forget after seeing it for the first time.