Endorsing cities
- Amsterdam
- Asunción
- Bangangté
- Barcelona
- Barcelona Provincial Council
- Beitunia
- Berlin
- Birmingham
- Blantyre
- Bologna
- Buenos Aires
- Cascais
- Copenhagen
- Durban
- Eyyübiye
- Geneva
- Jakarta
- Lisbon
- London
- Mannheim
- Mexico City
- Medellin
- Montreal
- Montevideo
- New Taipei
- New York
- Paris
- Rennes
- Río Grande
- San Antonio de Areco
- Seoul
- Strasbourg
- Taipei
- Terrassa
- Tlajomulco
- València
- Vienna
- Zaragoza
Metropolitan entities
- AMBBarcelona Metropolitan Area
- Greater Manchester
- Plaine CommuneGrand Paris