The aim of the 3Land project is to redevelop a trinational territory situated to the north of Basel, on both sides of the Rhine. This project has been the subject of two successive cross-border planning agreements between the municipalities concerned in Switzerland, France and Germany. Before these agreements were signed, an urban vision was produced by MVRDV/Cabane/Josepy and completed later by the LIN agency. The project focuses on the densification of a mixed use zone in the heart of the Basel cross-border metropolitan area, the improvement of the living environment and mobility and also economic redevelopment.
Among the palette of European tools available to support the development of cross-border territories, this essay considers the impact that an Internationale BauAusstellung (IBA, International Architecture Exhibition) would have on the territorial development of the Greater Region. First of all it describes the specific nature of this spatial development tool, then identifies the specific characteristics of the Greater Region which would justify the use of such a tool. It concludes with a set of reasoned proposals on procedure and possible outcomes.