Bangladesh faces a new beginning in 2024 following the mass uprising against structural injustice and poor governance, with a call towards rethinking our institutions and knowledge infrastructure. In response to this call, and recognising the challenges of rising inequalities, economic instability, environmental degradation and climate change faced by our cities, towns and villages, the implications for the future of our built environment is a question that needs reflection now. Titled ‘Next 50: Collective Futures’, this book brings together built environment researchers, architects, planners, environmentalists, activists, educators, and practitioners from all across the world working with alternatives to mainstream built environment policy and practice.