Düsseldorf, North Rhine-Westphalia, Germany
Kitakyushu, Fukuoka Prefecture, Japan
Barcelona, Catalonia, Spain
Kawaguchi, Saitama Prefecture, Japan
Ulaanbaatar, Ulaanbaatar, Mongolia
Amsterdam, Noord-Holland, Netherlands
Illkirch-Graffenstaden, Grand Est, France
Hainan Sheng, China
