Book excerpt: This innovative book investigates the concept of collapse in terms of our built environment, exploring the future transition of modern cities towards scenarios very different from the current promises of progress and development. This is not a book about the end of the world and hopeless apocalyptic scenarios. It is about understanding change in how and where we live. Collapse is inevitable, but in the built environment collapse could imply a manageable situation, an opportunity for change or a devastating reality. Collapsing gracefully means that there might be better ways to coexist with collapse if we learn more about it and commit to rebuild our civilisations in ways that avoid its worst effects. This book uses a wide range of practical examples to study critical changes in the built environment, to contextualise and visualise what collapse looks like, to see if it is possible to buffer its effects in places already collapsing and to propose ways to develop greater resilience. The book challenges all agents and institutions in modern cities, their designers and planners as well as their residents and users to think differently about built environment so as to ease our coexistence with collapse and not contribute to its causes. .