The topic of the next ELASA meeting in Austria is “urban jungle”. In doing so, we want to elaborate on the term: What is an urban jungle and what characterizes it? How is it created and what are its different shapes? Does urban wilderness have to be a “chaotic collection of plants” or can the urban jungle already be a form of wilderness? Of course, as planners we are particularly interested in whether it is possible to plan an “urban jungle” or whether it has to emerge and develop “bottom-up” on its own.