Book excerpt: Around the world, researchers, policy makers, and practitioners are working to ensure cities and communities are prepared for the challenges and opportunities of aged and highly urbanised populations. Bringing together stakeholders from Asia, Australia, Europe, and North America, this book presents new evidence and critical reviews of current knowledge to promote ongoing discussions on: affordable and accessible housing to support ageing in place; built environment supports for health-enhancing physical activity and mobility; and planning and design strategies and approaches to promote healthy and active ageing in cities and communities. The book content is framed by socio-ecological models of ageing and well-being that emphasise the dynamic interconnections between people and environment. Contributions in this edited volume stem from the International Ageing Urbanism Colloquium, 2017, Singapore University of Technology and Design.