Only the man who sleeps and wakes as and when he wishes, is free in the truest sense of the word.

– from the film Cities of Sleep (dir. Shaunak Sen, 74 min.)


Ignaz Strebel is an urban geographer and senior scientist at the University of Lausanne. His research is on the social and material practices that make up and transform urban systems. Using ethnography and audio-visual projects, he currently researches building care work, energy infrastructure services and the transformation capacities of prefabricated buildings.