The book "Sustainable Urban Transformations" arises from the acknowledgment of the fact that established planning no longer suffices. Incremental adjustments have largely failed to match the gravity of our crises. What we need, instead, is a radical rethinking of how cities work — embedding climate resilience, circular economies, social justice and digital innovation into unified approaches. In this volume, interdisciplinary voices from Southern Europe, Bangladesh, Brazil, Germany and cross-country offer a combination of critical analysis and actionable road maps. The book is divided into four themed Areas: Part I – Climate Resilience and Environmental Systems Part II – Decarbonization, Resource Circularity, and Building Performance Part III – Social Equity and Inclusive Wellbeing Part IV – Governance, Finance, and Strategic Planning Part V – Digital Innovation and Smart Urbanism Together, these chapters offer no easy prescriptions, but are a deep portrait of evidence, critique and hope. We thank all authors and reviewers for their work in this volume.

Walter Leal Filho is a Senior Professor and Head of the Research and Transfer Centre "Sustainable Development and Climate Change Management” at Hamburg University of Applied Sciences in Germany, and Chair of Environment and Technology at Manchester Metropolitan University, UK. He is the initiator of the Word Sustainable Development Symposia (WSSD-U) series, and chairs the Inter-University Sustainable Development Research Programme. Professor Leal Filho has written, co-written, edited or co-edited more than 800 publications, including books, book chapters and papers in refereed journals.

Maria Constança Simões Rigueiro. PhD in Civil Engineering in 2009 from the University of Coimbra. She is a full member of the ISISE research centre, where she is a member of the SMCT - Steel and Mixed Construction Technology research team. She is a Coordinating Professor at the Castelo Branco Polytechnic Institute. Since February 2025, she has been the coordinator of the Degree Course in Civil Engineering. In her curriculum vitae, the most frequent terms used to contextualise her scientific, technological production are: Structural Dynamics; Bridges; Extreme Actions; Design; Sustainability; Sustainable Construction; Sustainability Assessment; Sustainability in Teaching and Curricula.Professor Constança Rigueiro has written and co-written more than 180 publications.

Maria Alzira Pimenta Dinis, Habilitation, PhD, MSc is Associate Professor at the Faculty of Science and Technology, University Fernando Pessoa, Porto, Portugal. Graduated in Metallurgical Engineering and Master Science in Materials Engineering at the Faculty of Engineering, University of Porto, Portugal. PhD in Earth Sciences and Habilitation in Ecology and Environmental Health at the Faculty of Science and Technology, University Fernando Pessoa, Portugal. Co-Coordinator of the Earth Sciences doctoral program. Researcher at Fernando Pessoa Research, Innovation and Development Institute (FP-I3ID) and Centro de Ciências do Mar e do Ambiente/Marine and Environmental Sciences Centre (MARE), University of Coimbra in environment-related topics. Experienced author, editor and reviewer. Sustainability expertise.