The following 31 cities, across 16 countries, are currently represented by our signatories: Amsterdam, Arnhem, Basel, Beijing, Berlin, Brussels, Budapest, Cambridge (USA), Chicago, Copenhagen, Cork City, Dresden, Ghent, Johannesburg, Liverpool, London, Marseille, Melbourne, Metz, Munich, New York, Plymouth, Portland, Oxford, Paris, Plymouth, Portland, Rotterdam, Sydney, Toronto and Vienna.
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Source: https://www.swimmablecities.org/