This report from UN Habitat delves into how the COVID-19 pandemic in 2020 created a temporary crisis of confidence in the future of cities. However, a broad consensus is that urbanization remains a powerful twenty-first century mega-trend; and that well-planned towns and cities remain central to the sustainable development trajectory. There is a sense of optimism that the crisis may provide us with the opportunity to build back differently, more inclusively, greener and safer.