Prague, Prague, Czech Republic
St Petersburg, St Petersburg, Russian Federation
Laguna de Duero, Castilla y León, Spain
Offenburg, Baden-Württemberg, Germany
Natural Heritage Area Trang, Khanh Hoa Province, Vietnam
Donostia-San Sebastian, Basque Country, Spain
Saint Petersburg, Saint Petersburg, Russia
Saint Petersburg, Saint Petersburg, Russian Federation
Frankfurt am Main, Hessen, Germany
Rīga, Latvia
