The current article deals with the influence of territorial context on the intervention of teenagers’ treatment centers (modes and axes of intervention). To demonstrate the existence of this relationship, one particular example is used : the Avicennes center (« Maison des Adolescents ») in Bobigny. The article studies the local particularities of the Seine-Saint-Denis department from the points of view of history, specific problems, and local public policies in the fields of social, health and youth affairs. Then it shows the ways these elements impact the choices made for the teenagers’ center functioning where the types of care or the innovations are concerned. More broadly, the article attempts to explain the reasons for the specificities that are currently characterize teenagers’ treatment centers in our country.