Aachen, North Rhine-Westphalia, Germany
Dar es salaam, Dar es salaam, Tanzania, United Republic of
Limburg an der Lahn, Hessen, Germany
Moscow, Russian Federation
Saint Petersburg, Saint Petersburg, Russian Federation
Mönchengladbach, NRW, Germany
Alkhoud, Muscat Governorate, Oman
Aachen, Nordrhein-Westfalen, Germany