Bratislava, Slovakia
Vienna, Vienna, Austria
Berlin, Berlin, Germany
Goettingen, Lower Saxony, Germany
Alkmaar, North Holland, Netherlands
Hoogeveen, Drenthe, Netherlands
De Bilt, Utrecht, Netherlands
Sankt-Peterburg, Saint Petersburg, Russian Federation
Sofia, Sofia City Province, Bulgaria
Sofia, Sofia, Bulgaria
Utrecht, Utrecht, Netherlands
Craiova, Dolj, Romania
