Curators make many decisions when they build collections or design exhibitions, plotting a passage of discovery that also tells an essential story. Collecting captures the past in a way useful to the present and the future. Exhibits play to our senses and orchestrate our impressions, balancing presentation and preservation, information and emotion. Curators consider visitors’ interactions with objects and with one another, how our bodies move through displays, how our eyes grasp objects, how we learn and how we feel. Inside the Lost Museum documents the work museums do and suggests ways these institutions can enrich the educational and aesthetic experience of their visitors.