Istanbul, Istanbul, Turkey
Athens, Attica, Greece
Luxembourg, Luxembourg
Istanbul, İstanbul, Turkey
Tallinn, Harju County, Estonia
Tartu, Tartu County, Estonia
Dresden, Saxony, Germany
London, United Kingdom of Great Britain and Northern Ireland
Żyrardów, Masovian Voivodeship, Poland
Thessaloniki, Decentralized Administration of Macedonia and Thrace, Greece