Credits Presentations Introduction: Medellin: A Model of Integral Social Development and a Laboratory City 01. Peace and Reconciliation: Back to Legality 02. Strategy for the Territorialization of Security. Making Medellin Safer: Together We Can 03. Integral Urban Projects –PUI's– 04. Integral Neighborhood Improvement Program –PMIB– The Juan Bobo Case 05. Macro Project for Integral Intervention in the Neighborhood of Moravia and its Area of Influence 06. Public Libraries System of Medellin 07. Centers of Zonal Business Development –Cedezo– 08. High Quality Schools for Equity and Cohabitation 09. Institute of Recreation and Sports of Medellin -Inder- 10. Agency of Cooperation and Investment of Medellin and the Metropolitan Area -ACI- Bibliography Epilogue: The City as a Setting for Citizens' Transformation