Little is known about our autobiographical memories for cultural events. This represents an opportunity for cultural institutions such as museums, as examination of visitor memories is one way in which they can seek to understand the long-term impact they may have on their visitors. This research applied a coding model developed from autobiographical memory theory to analysis of participants’ memories for museum visits, considering the distribution of memories across the life span, types of memories and content. Differences between visitor groups (age, visit frequency) were also considered. Findings showed a strong recency effect in the life-span distribution, suggesting the importance of social sharing in memories of cultural experience. Analysis of content showed a hierarchy of information that was present in museum memories. Knowledge acquired during the event of the visit was important, as was contextualising information whereby visitors situated the memory within their autobiographical knowledge and chronology. Emotions and thoughts were also salient. Visitor differences had minimal impact on content, with the exception of some effects that were consistent with the literature on memory and ageing. This research develops understanding of autobiographical memories for cultural experiences and provides insight to museums, with practical implications in terms of understanding visitors’ experiences.