Istanbul, Istanbul, Turkey
Maxilly-sur-Léman, Haute-Savoie, France
Zhuhai, Guangdong, China
Duesseldorf, North Rhine-Westphalia, Germany
Columbus, Ohio, United States
Düsseldorf, NRW, Germany
State of Piauí, Brazil
Wroclaw, Poland
Bochum, NWR, Germany
Essen, North Rhine-Westphalia, Germany
Düsseldorf, Nordrhein-Westfalen, Germany