The city of the future is a green city, where trees, ponds and parks, provide the lungs of the boroughs and biodiversity can find its way into the city. In green cities, people live in healthy neighbourhoods, employees work in circular business parks, and all citizens have access to sustainable food and other natural resources. For us, urban leadership means co-creating these solutions together with cities’ inhabitants. Therefore, we work with urban leaders in business, government and social movements to build green cities worldwide. This can be on the scale of the metropole, migrant settlements, business parks or city centres.