Denmark Aarhus Guldborgsund Kolding Estonia Elva Haapsalu Pärnu Rakvere Tallinn Tartu Finland Espoo Helsinki Jyväskylä Kemi Kotka Lahti Mariehamn Pori Porvoo Turku Vaasa Germany Greifswald Hamburg Kiel Rostock Latvia Cēsis Jēkabpils Jelgava Liepāja Riga Valmiera Lithuania Gargždai Jonava Kaunas Klaipėda Palanga Panevėžys Rokiškis Tauragé Norway Arendal Kristiansand Poland Darłowo Elbląg Gdańsk Gdynia Koszalin Mielno Pruszcz Gdański Reda Rumia Sejny Słupsk Sopot Ustka Sweden Gävle Kalmar Karlskrona Luleå Malmö Örebro Region of Gotland Söderhamn Trelleborg Umeå Växjö Ukraine Chernihivka Kherson Khmelnytskyi Kramatorsk Pokrovsk Rivne region (partner) Rubizhne Vilnyansk Vyshhorod Zaporizhzhia Jēkabpils UBC member city since 1997 City web site