Ghosts of solid air: contested heritage and augmented reality in public space

This article critically reflects on the design and development of a new Augmented Reality (AR) experience addressing issues of contested heritage in the historic built environment. The experience - Ghosts of Solid Air - is a 45-minute interactive theatrical narrative for mobile phones that tells a critical story about the legacies of colonialism and histories of protest and disobedience that have shaped contemporary Britain. Audiences follow the story from Trafalgar Square to Parliament Square in central London, encountering varied contested monuments and activist figures from the past along the route. This article describes the main elements of the experience before tracing the evolution of the project and its relationship to shifting debates on contested heritage in the UK since 2020. We conclude with reflections on the challenges and opportunities of AR when it comes to opening up new modes of heritage engagement, paying particular attention to questions of justice and participation that transcend issues of representation, recognition, and reinterpretation.