Invited by Chateau La Coste, JR inaugurated a new installation in December 2017. In the Renzo Piano Pavilion, he has created an optical illusion that appears very simple while achieving technical prowess.

The image is surreptitiously offered to the visitors when they move closer to the installation as the result of the synchronisation of  700 overlapping electric train wagons that create a mosaic of face fragments. The image revealed  disappears as quickly as it appeared, letting each train go at his own pace. 

As a nod to previous projects, including his action on a train going through the slums of Kibera, Kenya in 2009 and to his installation at the Panthéon (Paris, France) in 2014, JR uses an easily identifiable mechanical process to create a new illusion.