City3 is a Brussels based do tank for urban intervention. Through a wide variety of activities, organised from an interdisciplinary perspective, City3 aims to contribute to the debate on the shaping and designing of the built environment in Brussels. City3 is the driving force behind the PeriFeria Festival in the periphery of Brussels, co-organiser of the talks and reflective interventions of Mediating [Infra]Structures, The Fine Art of Gentrification and Etat des Lieux, founding member of w-o-l-k-e, and partner in the Public School for Architecture Brussels.