Heidelberg, Baden-Wuerttemberg, Germany
Bangor, Gwynedd, Wales
Vila Nova de Gaia, Portugal
Dublin, Dublin, Ireland
Prague, Hlavní město Praha, Czech Republic
Madrid, Comunidad de Madrid, Spain
Shenyang, Liaoning, China
Phoenix, AZ, USA
New Delhi, Delhi, India
Kiel, Schleswig-Holstein, Germany
Kunming, Yunnan, China
Liverpool, Merseyside