In view of a wide range of urban crises, the cooperative development of urban spaces is increasing in importance. How to succeed in this is shown by Michael Ziehl, based on the example of the renewal of the historical Gängeviertel in Hamburg. As an activist and researcher, he opens up deep insights into the unusually close cooperation between involved citizens, politics and administration. He presents the framework conditions, conflicts and adaptation measures of the cooperation. Understanding urban space as a real-world laboratory, he provides concrete suggestions for action as to how resilience can be coproduced. He offers future-oriented practical knowledge for driving the sustainable transformation of cities forwards and raising the adaptability of urban systems.