In a discourse about the future of cities, one could be forgiven for limiting their geographical scope to innovations in Europe, the United States, and increasingly, China and Southeast Asia. After all, Shenzhen is about to once again host the world’s only Biennale dedicated exclusively to urbanization, while smart, responsive architecture manifests in visions for cities such as Toronto and London, and tech giants such as Microsoft and Siemens. However, despite our preoccupation with the problems and opportunities of urbanization in the ‘Global North’, and the architectural innovations they herald, there is merit in expanding our horizons – and not just towards Mars. By the end of the century, none of the world’s largest 20 cities will be in China, Europe, or the Americas. Africa, meanwhile, will host 13 out of 20, including the top 3.