The 2020 coronavirus pandemic caused countries across the world to implement measures of social distancing to curb spreading of COVID-19. The large and sudden disruptions to everyday life that result from this are likely to impact well-being, particularly among urban populations that live in dense settings with limited public space. In this paper, we argue that during these extraordinary circumstances, urban nature offers resilience for maintaining well-being in urban populations, while enabling social distancing. We discuss more generally the critical role of urban nature in times of crisis. Cities around the world need to take the step into the 21st century by accepting crises as a new reality and finding ways to function during these disturbances. Thus, maintaining or increasing space for nature in cities and keeping it accessible to the public should be part of the sustainability agenda, aiming simultaneously to strive towards SDG 3 (good health and well-being), and SDG 11 (sustainable and resilient cities).