This paper explores the way in which visitor experiences can be co-constructed in a museum context, depending on the type of authenticity apparent. The research is set within the context of two literary heritage attractions – 56 Eden Street (the childhood home of Janet Frame) and the Katherine Mansfield Birthplace. Findings highlight that visitors perceived that they have had a positive experience even in the absence of indexically authentic artefacts, because they draw on the knowledge of the curator and their own imagination to co-construct their experience.