This dataset contains all public data on cities' adaptation actions reported by cities through the CDP-ICLEI Unified Reporting System in 2021. View cities questionnaire guidance https://www.cdp.net/en/guidance/guidance-for-cities. This data is collected through the CDP-ICLEI Unified Reporting System. When using this data, please cite both organisations using the following wording: ‘This data was collected in partnership by CDP and ICLEI - Local Governments for Sustainability’.