In “The Self-Sufficient City”, as Guallart called his project, residents can live, work and rest in their living environment. The buildings are topped by greenhouses to produce food for daily consumption, and will be supplied with energy by solar panels installed on their sloping roofs. And to produce everyday objects, a digital industry equipped with 3D printers will be set up on their ground floors. The homes also have a large south-facing terrace, which acts as a thermal regulator and will be used for the tenants to play and rest. Finally, the complex, which includes housing, retirement homes, offices, a public swimming pool, market, kindergarten, administrative centre and fire station, will be built with wood, according to circular bioeconomy principles.