Architect Julien Beller illuminates his atypical approach to urban design: calling into question how a city is built, he works toward building a just city, constructed with pleasure, where everyone has a place. His projects focus on autonomous zones (cultural spaces, work spaces, classrooms) and on housing and habitat for the city’s most precarious inhabitants (toilets in slums, adaptable housing). Among many other projects, in 2017 Beller and his team designed and built a welcome center for migrants in Paris’s Porte de La Chapelle, which lodged more than 250,000 people in its first year alone.