ROCK is a H2020 funded project, coordinated by the Municipality of Bologna, focussing on Cultural Heritage as a powerful engine of urban regeneration, social inclusion and sustainable city growth. Bringing together 32 partners across Europe, the project experiments a set of heritage-led innovation actions, specifically addressed to support cities in facing the complex and delicate challenges characterising historic city centres. The project is conceptualising an innovative systemic, participatory and circular approach to urban transformations, led by CH conceived as an urban commons requiring shared responsibility, multi-level governance and strong community and stakeholders' active engagement.