At the international symposium on ‘Boundaries and the Cultural Landscape’ which took place in Basle in 1981 (see Regio Basiliensis, Vol. 22), and which in some respects could be viewed as a forerunner to the Perth Conference, we discussed some basic research questions on the theme of a ‘Geography of boundaries’. Thereafter, our understanding of this problem area has been enriched as it has been developed and cultivated at Basle in recent years. The main purpose of this chapter is to summarise briefly the results of geographical boundary research undertaken since 1974 at Basle University Geo­ graphy Department, mostly as MA and PhD theses. Research on boundary effects is an important part of the Basle human geography research programme, which perhaps is no surprise given the boun­ dary situation of our University (Plate 2.1).