The World Cities Day 2018 Theme is Building Sustainable and Resilient Cities.
So how green is your European city?
Happy #Halloween2018👻🍬🧙♀️Are you celebrating in your favourite city? On this #WorldCitiesDay check out our ''Green City Tool'' to spot any spooky environmental facts about your city & compare its performance with others so you can make it greener! https://t.co/HKk1LOH48h pic.twitter.com/CaakqftjpW
— EU Environment (@EU_ENV) October 31, 2018