This article analyzes youth’s experiences of placement in a rehabilitation center and how this restrictive placement influences the processes of autonomization and of transition to adulthood. Based on a secondary analysis of 30 interviews with youth who were placed or had been placed in the past, it exposes the carceral and totalizing experience during their restrictive placement. The architecture, the isolation, the confinement, and the multiform supervision complicate youth's learning during the process of autonomization. This article finally questions the scope of restrictive placement environments.