Since its foundation in 1995, the collective Stalker has carried out research and actions in territories with particular attention to marginal realities and areas of transformation. The intervention method is historically based on exploratory, listening, relational, convivial, and collaborative spatial planning practices, activated by creative interaction devices with the investigated environment, its inhabitants, and the archives of memory. Since 2009, the collective has continued its research through different paths led by the founders, among them Primavera Romana, Laboratorio di Arti Civiche, Museo Relazionale, No-working, and Stalker walking school.