Cities large and small are constantly trialling (and succeeding with) groundbreaking ideas, projects, and policies. We’ve located some of the most forward-thinking places that have been brave enough to test out innovations – and risk the failures. Among the challenges, they have faced outspoken opposition, financial constraints, ingrained behaviours, legislative hurdles, and setbacks caused by the COVID-19 pandemic. Their experiences in how they deal with this and much more can set other cities well on the way to change. So, whether you’re looking for stories about citizen participation, funding models, communication strategies, or the latest concepts and technical solutions, our Notable Cities are bound to be of interest.