The EU-funded SPICE project aims to foster diverse participation in the cultural heritage domain via citizen curation, where citizen groups will share and compare their interpretations of cultural objects with other groups. Various tools will assist citizens in this process, helping them build a representation of themselves and appreciate variety and similarity across groups to enhance social cohesion. A linked data infrastructure will assist via social media platforms, giving heritage institutions control over rights-protected digital assets and access to citizens' responses. Finally, a series of citizen curation case studies with a diverse set of museums and citizen groups will demonstrate how this approach can promote inclusive participation and social cohesion in a variety of contexts.