This report explores how nature-based infrastructure (NBI) responds to pressing urban challenges and supports the creation of sustainable cities. It starts by illustrating what makes cities sustainable and the potential role of NBI. Next, it summarizes research findings about the value of four NBI types for sustainable urban infrastructure: urban green spaces, green roofs, stormwater infrastructure, and wetlands and lakes. The literature review is complemented by selected NBI case studies that have been assessed with the Sustainable Asset Valuation (SAVi) methodology. Finally, the report concludes by arguing that sustainable cities require strategic, cross-sectoral urban infrastructure planning with nature at its core. Key messages:
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