Danmark Aarhus Guldborgsund Estland Elva Haapsalu Pärnu Rakvere Tallinn Tartu Finland Espoo Helsinki Jyväskylä Kemi Kotka Lahti Mariehamn Pori Porvoo Turku Vaasa Lettland Cēsis Jēkabpils Jelgava Liepāja Riga Valmiera Litauen Gargždai Jonava Kaunas Klaipėda Palanga Panevėžys Tauragé Norge Arendal Kristiansand Polen Darłowo Elbląg Gdańsk Gdynia Kołobrzeg Koszalin Mielno Pruszcz Gdański Reda Rumia Sejny Słupsk Sopot Sverige Gävle Kalmar Karlskrona Luleå Malmö Örebro Region of Gotland Söderhamn Umeå Växjö Tyskland Greifswald Hamburg Kiel Rostock Ukraina Chernihivka Chernivtsi Kamianets-Podilskyi Kherson Khmelnytskyi Kolomyia Kramatorsk Myrove Pokrovsk Rivne region (partner) Rubizhne Vilnyansk Vyshhorod Zaporizhzhia Zaporizhzhia Kołobrzeg UBC member city since 2024 More information on ubc.net member page City web site