A catalogue of tools and resources designed to help tackle some of the most pressing shared challenges around urban nature-based solutions (NbS). It provides practical insights and resources for addressing six key challenge areas: NbS assessment; co-governance; citizen engagement; inclusion and diversity; urban planning; and private sector provision of NbS. Each section contains an in-depth introduction to the challenge, common barriers, and actionable solutions, along with a wealth of resources such as tools, guidance, webinar recordings, case studies, reports, factsheets and online learning opportunities. The Urban Nature Gateway is a product of the INTERLACE project, funded by the European Union. It has been developed through collaboration between organisations and municipalities in in Europe and Latin America.