Kraków, Lesser Poland Voivodeship, Poland
Veliko Tarnovo, Veliko Tarnovo, Bulgaria
İstanbul, Turkey
London, London, United Kingdom
Budapest, Budapest, Hungary
Izmit, Kocaeli, Turkey
Ilmenau, Thuringia, Germany
Sofia, Sofia, Bulgaria
Madrid, Community of Madrid, Spain
Tokyo, Tokyo, Japan
Maastricht, Limburg, Netherlands
