Debates continue about the positioning of design within research-driven universities. While the idea of autonomy has had a strong appeal, it is the bridging across established academic cultures that has proved especially effective for legitimizing design research and research education. Revisiting a conception of design as a 'Third Space' and drawing on a case - the Swedish Faculty for Design Research and Research Education (2008-2015) - we discuss what 'thirdness' can entail in context. Our account of this case reveals the unsettled dynamics of navigating in, between and across academic cultures. Design research education, we argue, has prospects to cultivate a critical space within academia, in which its 'thirdness' entails sensitization and agitation of the territorial conditions of knowledge. There is a need for a reconsideration of design - and academia more generally - not as a static disciplinary order but as a contested archipelago that opens for alternative orientations.