This thesis investigates the Community Hub as a strategy for urban regeneration in fragmented post-industrial territories, focusing on Turin’s Pietra Alta district. It explores how adaptive reuse, social infrastructure, and multi-scalar design can address spatial and social fragmentation, viewing architecture as an urban catalyst rather than the rehabilitation of a single building. The research combines theoretical studies, case analyses, territorial mapping, and design research. After defining a framework based on community hubs, third places, urban commons, and adaptive reuse, key principles are applied to Pietra Alta. Territorial analysis reveals a fragmented area shaped by industrial decline and major infrastructures. The Former Custom House is identified as a strategic intervention point due to its central location and civic potential.