The 1910 International Town Planning Conference is rightly seen as a major moment in the development of modern urban design. It drew together more than 1,000 architects and planners from across the world. At first sight, the conference consequently appears to provide further evidence for the importance of transnational town planning networks in this period. This article, by contrast, highlights the domestic agendas which underwrote the event. It shows that the conference was considerably less successful and less international than has previously been argued. It thus stresses the limitations of the town planning movement: underscoring the continued importance of national differences and national debates.