Most tabletop research presents findings from lab-based user studies, focusing on specific interaction techniques. This means we still know little about how these new interfaces perform in real life settings and how users appropriate them. This paper presents findings from a field study of an existing interactive table in a museum of natural history. Visitors were found to employ a wide variety of gestures for interacting; different interface elements invited different types of gesture. The analysis highlights challenges and design conflicts in the design of tabletop interfaces for public