Urban forests and green spaces are key components of sustainable and resilient urban development, providing a wide range of ecosystem goods and services. They play an important role toward the achievement of the Sustainable Development Goals, in particular SDG11, which focuses on making cities safe, resilient and sustainable.  WFUF's overall theme will be: Greener, Healthier and Happier Cities for All. This theme was chosen to highlight the importance of building inclusive and accessible cities where the goods and services of urban forests and trees are universally available. The aim of the forum is to continue to highlight positive examples of planning, design and management approaches that cities with diverse cultures, forms, structure and histories have implemented to optimize the contribution that urban forests and green infrastructure can provide in terms of economic development, environmental conservation and resilience, improved social cohesion, and increased public involvement.