As a part of the European Capital of Culture Ruhr.2010 Jochen Gerz invited people to live in the Ruhr region rent-free for one year, in the project 2-3 Streets. An Exhibition in Cities of the Ruhr (). This produced both a literary work of collective authorship and a unique social process in the cultural landscape, summarised as: '"2-3 Streets" not only aims to change the streets, but also art.'