In this webinar, London, Paris and Los Angeles discussed their experiences as host cities, and the legacies and challenges of being three Olympic cities. What are the legacies and lessons learned from the London experience 10 years later? What are the main guidelines for the next two host cities to build on this legacy? This event formed a part of the NLA City Dialogues programme, which brings together speakers and audiences to foster cross-city dialogue and learning between cities.