The extensive digital archives of personal data that we collect over the period of a lifetime can support new ways of autobiographical storytelling. Autobiographical visualizations are visual representations based on these repositories that can be used to share important life experiences with others. The focus on storytelling is different from other personal informatics applications that mainly aim for self-reflection. This workshop paper discusses the distinct challenges for the design of auto- biographical visualizations: the integration of multiple data sources, personalization, self-explanatory representation and privacy aspects. We further outline suggestions for approaching these challenges.