The dynamics of museum experience design processes and practices can be better understood by considering how public attachments shape experiential knowledge practices. Within exhibitions, attachments stipulate participatory forms that bond visitors experience with histories of objects, places and people, creating relationships that museums institutionalise and leverage for public formation. This idea is explored through a historical exhibition reimagining and refurbishing the memorial rooms of György Bernády, reframing his legacy through the social networks he catalysed for the urban transformation, public life, and cultural landscape as a mayor of Târgu Mureș (former Marosvásárhely), an emerging city in early twentieth century Transylvania. Drawing on symbolic interactionism, science and technology studies affect theories, the chapter considers the transformative potential of attachments that museums can harness in their relationships with publics, their role in heritagisation processes and public history, and offers insights for exhibition design research and practice within and beyond cultural institutions.