Moscow, Moscow, Russian Federation
Saint Petersburg, Russian Federation
Kazan, Tatarstan, Russian Federation
Samara, Samara Oblast, Russian Federation
Cheltenham, United Kingdom of Great Britain and Northern Ireland
Leiden, Zuid-Holland, Netherlands
George Town, Penang, Malaysia
Bielefeld, North Rhine-Westphalia, Germany
Kazan, Republic of Tatarstan, Russian Federation
Ho Chi Minh, Viet Nam