This dissertation brings to the theoretical field the processes related to social action, seeing its potential for transforming urban space from the methodology of cartography of action, following the line of investigation/active participation. In this way, the work has the general objective: Discuss the space of Favela do Final Feliz from the dialogue with Coletivo COE. Throughout the theoretical construction, I characterize the space of Favela do Final Feliz dissociated from the “overflight” vision and discuss its insertion in the production process of the city of Rio de Janeiro. Based on everyday actions in the community, through participatory action research, I demonstrate the forms of appropriation of space by Coletivo COE and how they shape the experiences of the space lived in this favela. This work produces a deeper and more reliable understanding of Favela do Final Feliz and Coletivo COE, which demonstrates the relevance of Geography and action research to understand social movements in favelas.