Culture and creativity make two contributions to sustainability in cities: (1) Economic impact, related to the economy and the marketing of the city, involving consumers, jobs, creative clusters, technology, mobility, infrastructures and (2) urban regeneration concerned with social cohesion, socially creative initiatives and local citizenship with sustainability objectives. We provide a critical appraisal of the first and concentrate on the second. The paper focuses on how collective actors are capable of creating new spaces for public debate and daily practices that reinforce community life and citizenship. In some cities creation of spaces for cultural creativity has been the result of 'bottom-linked' innovation. Two examples are examined in two peripheral districts of Barcelona. These are: Ateneu Popular de 9 Barris(AP9B) and Fabra i Coats. Both are currently managed by a hybrid partnership between public administration and civil society organizations. The 'bottom-linked' approach to social innovation recognizes the centrality of initiatives taken by those immediately concerned, and also stresses the need for institutions that enable and sustain such initiatives through sound, regulated and lasting practices and through clear citizen rights, guaranteed by the functioning of the democratic state (Pradel, García, & Eizaguirre, 2013)