text: Osaka, Japan, since 1984 
  Ouagadougou, Burkina Faso 
  Porto-Novo, Benin 
  Rabat, Morocco 
  St. Louis, United States[85] 
  Saint Petersburg, Russia 
  Sétif, Algeria 
  Tinca, Romania 
  Turin, Italy 
  Yerevan, Armenia, since 1992 
  Yokohama, Japan, since 1959 