Irregular balconies surround social housing stacked over school in Paris

O4A is a Paris development with a primary school, sports centre and two tower blocks of social housing by architecture studios Brisac Gonzalez and Antoine Régnault.
The scheme is located in the new eco-district of Clichy-Batignolles, a new neighbourhood in the city's 17th arrondissement being built on a former rail yard.
Photo by 11h45
Brisac Gonzalez Architects and Antoine Régnault won the competition in 2012 to design the scheme.
O4A comprises 144 housing units and a 15-classroom