The CircularCityChallenge project will set up a pan-European competition for students aged 14-19. Through the competition, the consortium will collect submissions providing creative and novel ideas for circular city approaches. The challenge invites young people to submit their own ideas for a sustainable future in their own environment while at the same time educating them in the topic of sustainable development. This approach will have a threefold effect: (i) in researching a competition-based approach of educating functional urban design in support of circular systems and the use of nature-based solutions and design curricula for different school types and age groups, the project will improve education in schools and education for sustainable development in particular; (ii) in providing students the possibility to submit ideas on a new approach on circularity, the project will raise awareness on sustainability; and (iii) in providing fresh ideas and approaches, cities will be enabled improve their resource use and waste management strategies, business models and smart city developments for the common good. Cities will further be enabled to build adaptable future visions and adopting a circular economy strategy.