Sofia, Sofia City Province, Bulgaria
Moscow, Moscow, Russian Federation
Budapest, Hungary
Sankt-Peterburg, Sankt-Peterburg, Russian Federation
Stockholm, Stockholm County, Sweden
Kazan', Respublika Tatarstan, Russian Federation
Kazan, Tatarstan, Russian Federation
St Petersburg, St Petersburg, Russian Federation
Irkutsk, Irkutskaya oblast', Russian Federation
Tbilisi, Georgia
Budapest, Budapest, Hungary
Tianjin, China
