This book provides a fresh look at Alvar Aalto’s regional and community planning work, particularly the ways in which he incorporated sustainability, resiliency, energy, and health, and examines how contemporary architects and planners can learn from this approach for the betterment of 21st-century urban design and our future cities. The Alvar Aalto Atelier planned and promoted regional development that combined ecological features, considered density, and offered a framework for informality, including flexible, adaptable infrastructures, with physical plans integrating communities with nature. These plans were largely suburban and contained vital lessons on how to deal with sprawl, traffic, landscape, energy, labor, and industry. This book analyzes letters, writings, and drawings not seen outside the Alvar Aalto Foundation, to review alternative ways to examine suburban landscapes and urban typologies, through sustainability, ecology, and use of digital technologies. This is an essential read for all those interested in the urban design work of Alvar Aalto. Written in an accessible way for those new to the work of Aalto, Architecture and Urban Design students of all levels will also find this a helpful guide on ecologically and socially responsible design.