Dubna, Moscow region, Russian Federation
Saint Petersburg, Saint Petersburg, Russian Federation
Barcelona
Velikiy Novgorod, Novgorod, Russian Federation
Budapest, Budapest, Hungary
Tirana, Tirana, Albania
Kunming, Yunnan, China
Guiyang, Guizhou, China
Moscow, Russian Federation
New York City, NY, USA
Vladimir, Vladimir, Russian Federation
Hong Kong, Hong Kong SAR, China