This article describes the use of participatory visual and multimedia methods as part of a participatory action research carried out in a highly degraded urban area of a metropolis. The project was developed by the ‘I love Portacapuana’ committee in collaboration with community psychology lab and 180 undergraduate psychology students of the University of Naples Federico II. The joint use of visual tools such as photographs and videos with Internet-based collaborative work groups – through social networks such as Facebook – has proved effective in interpreting the needs of local citizens. This process has also involved a thorough analysis in terms of strengths and weaknesses as well as opportunities and threats in the local context. Indeed, the integration of visual tools into the broader framework of community diagnosis has fostered an interactive dialogue between the local community, researchers and local authorities. This, in turn, has lead to the outlining of a series of intervention strategies for local urban regeneration.