This book offers a comprehensive overview of forces shaping urban renewal and the sustainable and inclusive transformation of contemporary cities. It discusses temporariness and uncertainty of citizenship, participation, and inclusion, as well as the energy and digital transformation, merging different perspectives, such as the social, philosophical, economic, and architectural ones. Based on revised and extended contributions to the International Congress "TEMPORARY: Citizenship, Architecture and City", held virtually on November 20-21, 2022, from the University of Bologna, this book offers extensive information and a thought-provoking reading to researchers in architecture, anthropology, social and environmental policy, as well as to professionals and policy makers involved in planning the city of the future.