Five municipalities in the Turku archipelago in Finland face a new challenge when they are merging to form one city on January 1st, 2009. This paper discusses the challenges ahead and describes the early stages of a research and development project which will propose, develop and implement solutions, especially involving interactive technologies, for a new city that is being formed. There is a need for new technologies and changes in working methods due to diminishing resources and physical boundaries. The need for improved collaboration is urgent for most of the small, geographically isolated, inhabited islands in the Finnish archipelago, but due to time constraints even more urgent for the new city being formed. This paper outlines how interactive web-based and mobile technologies can enable eCollaboration within and between islands and groups of stakeholders.