The Aburrá Valley is an inter-Andean landscape in which a city of 3.6 million inhabitants is located. Thanks to remarkable citizen participation processes, valuable technical efforts, and a stable political will, the urban environmental authority has declared 6 protected areas: Regional Natural Park (Cerro El Volador) and Recreation Areas (Nutibara, La Asomadera, Piamonte, El Trianón-La Heliodora, and Ditaires). The Aburrá Valley Metropolitan Area is already reaping the fruits of efforts to conserve biodiversity and ecosystem services, climate adaptation, and quality of life in a context with major challenges of air pollution, public space deficit, and public health. State action, citizen/business ownership, and knowledge management demonstrate that these areas are promising laboratories for cultural transformation and urban resilience in the face of climate change.