At the time of his premature death in 1942, Rex Martienssen, the gifted South African architect who had helped make Johannesburg an outpost of modernism, had just completed a seminal PhD thesis on Greek space, and was documenting the layout of remote African settlements in South Africa's highlands. Martienssen's writings suggest that the link between these disjunct projects was topographical thinking, a form of architectural seeing and thinking that ontologically articulates time, place and culture. His research project was informed by the white colonial national intellectual search for an alternative to the racialised imaginary geography being promoted by white nationalism in the 1930s, a paradoxical modernity that would be progressive and cosmopolitan, yet also respected a timeless order threatened by European modernity. This re-envisioning of the 'place' of Western culture in Africa was encouraged by two seemingly-unrelated engagements with the sub-continent's terrain: archaeology and commercial aviation. Both practices came into their own in Southern Africa during this period, deploying Western technique and rationality in ways that constructed a vision of the subcontinent that unsettled the territorial limits and historical narratives of the post-colony, and inaugurated perceptions of the African landscape as modern and transcultural, yet situated in the Hegelian geographical movement of history. This made it possible to imagine, for the first time, that the topographical organisation of indigenous settlements might yield a spatial logic for new urban areas. A key figure in understanding this multiscalar geo-historical subjectivity was Le Corbusier, who had close ties with Martienssen and what he called le Groupe Transvaal. Le Corbusier's global journeys during the 1930s had made him increasingly interested in the anthropo-geographic traces left by the 'natural order of things' in human environments, and the possibility of a neo-syndicalist world order based on geo-political regions that were latitudinally complementary.