Why has an illicit activity become one of the most significant art movements of recent years? How did a subcultural practice once regarded as vandalism come to signify urban creativity? In what ways can street art contribute to the invigoration of cultural practices and city spaces? These questions are answered by means of an interdisciplinary approach combining comparative fieldwork with theoretical analysis, and drawing from urban studies, criminology, cultural theory and socio-legal studies. The project provides a grounded evaluation of street art’s potential to transform our understandings and experiences of urban spaces, cultural value, and transnational networks.