Opole, Poland
Island Garden City of Samal, Davao Region, Philippines
Milano, Lombardia, Italy
Saint Petersburg, Saint Petersburg, Russian Federation
Novosibirsk, Novodibirsk, Russian Federation
Panchkula, Haryana, India
Hanoi, Viet Nam
Riyadh, Riyadh Province, Saudi Arabia
Berlin, Berlin, Germany
Davos, Switzerland, Switzerland
Freiburg im Breisgau, Baden-Württemberg, Germany
Carrboro, NC, USA
