As cities are increasingly challenged by rapid urbanization, population growth and the impacts of land degradation and climate change, they are in the need of finding adequate solutions for sustainable city development. As most of this development is taking place in river-side and coastal areas the rapid loss of valuable wetland ecosystems makes our cities increasingly vulnerable to the impacts of extreme weather events and climate change. We strongly believe, if we increasingly shift towards the implementation of blue-green infrastructure in cities, we can achieve more resilient and sustainable city development in the future.