Euroregion Cieszyn Silesia (Polish: Euroregion Śląsk Cieszyński, Czech: Euroregion Těšínské Slezsko) is one of the euroregions (transnational co-operation structures) between Poland and Czech Republic.
It has area of 1741,34 km2 and 658,224 inhabitants as of 2009.
The largest cities are Jastrzębie-Zdrój from Polish side and Havířov from Czech side.
[1] It comprises a large part of the historical region of Cieszyn Silesia: Not the whole area of the historical Cieszyn Silesia region belongs to the euroregion, mainly Bielsko and Czechowice-Dziedzice and Frýdek with its surroundings, east of the Ostravice river, which belong to the Euroregion Beskydy.
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