TOGO is a tourist mobile guide dedicated TO the town of GOrizia; it proposes the study of a general model for a museum mobile guide and an application prototype related to Palazzo Coronini Crönberg, the residence of the last count of Gorizia, now museum. This paper focuses on two main open issues: the innovative contribute offered by a contextual navigation based on semantic interconnections and the importance to create personal work-spaces for the users, enabling them to author new tourist paths. In order to capture semantic interconnections among data, we use advanced data structures called zz-structures, a graph-centric system of conventions for data and computing, able to offer semantic modalities of navigation.
