The United Nations is on the cusp of making history. The much-anticipated Sustainable Development Goals (SDGs) set out a bold and detailed global agenda to guide development for the next fifteen years. And it is arguably the eleventh goal, SDG 11, and its promotion of safer, more inclusive and resilient cities that makes them genuinely revolutionary. After all, two thirds of humanity will reside in urban settings by 2030. By 2050, roughly 6.4 billion people – almost the equivalent of the planet´s current population – will live in a city. The future success of the SDGs resides, in large part, in cities.