A new primary school opened its doors in September 2014, in Boulogne Billancourt, a commune in the western suburbs of Paris. Topped with a large green roof, the building seeks to be much more than a school, intending to promote science, biodiversity and sustainable development through its architecture and the teaching to be given there. The project was designed by Paris-based Chartier-Dalix Architects who won the winning design in a competition in 2011.

The school features eighteen classrooms, and a sports facility that is open for local residents. The public gymnasium rises to a height of 12 meters, while educational spaces are primarily housed on the ground and first floors, before rising progressively to the third storey. Each grade level has its own playground, and each playground will have a mineral soil treatment decorated with furniture and some trees. An inhabited wall forms the outer boundary of the plot. This wall is made of prefabricated concrete blocks which vary in depth, creating a scalable façade made of crevices and interstices of holes of various sizes that can accommodate vegetation and small birds.