How can policy be developed to support the implementation of nature-based solutions? Across multiple domains, from climate change to biodiversity, urban regeneration to health, nature-based solutions offer new approaches for responding to the challenges facing cities. Their implementation will require a supportive policy environment from the European region to the local level. The NATURVATION project will chart how policy-makers are seeking to include nature-based solutions within strategy, planning and regulation at all levels of government. We will also explore innovative governance approaches to overcome barriers.