Does your city meet the 3-30-300 rule?

Percentage of each European city's population meeting the full 3-30-300 principle and each of its three criteria separately: seeing at least three trees from home, living in a neighbourhood with at least 30% tree canopy cover, and having a public park within 300 metres.

Chart: El ConfidencialSource: Bertassello, L.E., Velde, M., Maes, J. et al. Assessing European cities with the 3-30-300 rule underscores the need for enhanced urban greening efforts. Nat Commun (2026)Get the dataCreated with Datawrapper