The book addresses the interdisciplinary and multiscale theme of the design of sustainable, inclusive and creative urban green spaces in relation to the socio-ecological transition and in line with the systemic vision promoted by the 2030 Agenda, the 17 Sustainable Development Goals (SDGs) and the principles outlined by the New European Bauhaus (European Commission, 2021). The publication refers to the International Study Day organized in June 2022 by the Unit for Internationalization of the PDTA Department of the Sapienza University of Rome, develops and updates its themes, with essays that deepen theories and methodologies pursued in specific disciplinary and research fields, and with case studies of design experiments and achievements that constitute best practices at an international level in the sign of a conscious sustainability. The book is therefore part of an international and interdisciplinary dialogue and discussion focused on the challenges of climate change, economic crises and social inequalities as well as the questions that emerged during the Covid-19 pandemic. These issues are fundamental in the rethinking and reconfiguration of the role of urban green spaces, conceived as a priority place for the existence of citizens, the archetype of European culture, the conservation of biodiversity, and the relationship with nature.