Cities in Transition focuses on the sustainability transitions initiated in 40 European cities. The book presents the incredible wealth of insights gathered through hundreds of interviews and questionnaires. Four key domains—local energy systems, local green spaces, local water systems and local labour markets—have been the focus of the field research investigating local potentials for social innovation and new forms of civil society self-organisation. Examining the potential of new organizational frameworks like co-operatives, multi-stakeholder constructions, local-regional partnerships and networks for the success of such transitions, this book presents the key ingredients of a sustainable urban community as a viable concept to address current global financial, environmental and social challenges. Crucial reading for academics and practitioners of urban planning and sustainability in Europe, Cities in Transition is an innovative roadmap for sustainability in changing cities.