This book explores the hypothesis that public space – if conceptualised, imagined, and shaped at the metropolitan scale, through innovative territorial design approaches – offers the possibility to interconnect and integrate various systems in search for synergic responses to emerging societal challenges that impact large, urbanised landscapes. The book offers a multidimensional and multi-geographic framework to discuss the role of public space on contemporary metropolitan territories, as part of MetroPublicNet - Building the foundations of a Metropolitan Public Space Network to support the robust, low-carbon and cohesive city: Projects, lessons, and prospects in Lisbon research project. The reader will find a critical and overarching perspective on the conceptual, methodological, and empirical lenses that unfolded throughout the research process, namely a systematised decoding of the public space projects, policies, and rationales that shaped the recent transformation of Lisbon Metropolitan Area. With a diverse range of authors actively engaged in academic research and professorship, in design practice, and in policy-oriented roles, the book concludes with the outlining of forward-looking guidelines, policy recommendations, and design experimentations. This book will be of interest to researchers and students of architecture, urbanism, landscape architecture and geography.