Duchy of Teschen
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The Duchy of Teschen, also Duchy of Cieszyn or Duchy of Těšín, was one of the Duchies of Silesia centered on Cieszyn in Upper Silesia. It was split off the Silesian Duchy of Opole and Racibórz in 1281
Silesia duchies in 1290–91: Teschen under Mieszko I in yellow
Piast castle tower in Cieszyn, part of the former ducal residence
Title page of the Constitution of the Duchy of Teschen (printed in Czech), issued by Duke Wenceslaus III Adam in 1573
Archducal palace in Cieszyn
Duchy of Opole and Racibórz
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The Duchy of Opole and Racibórz was one of the numerous Duchies of Silesia ruled by the Silesian branch of the royal Polish Piast dynasty. It was formed in 1202 from the union of the Upper Silesian du
The Piast Tower in Opole, the last remaining part of the Piast Castle, the residence of the dukes of Opole and Racibórz
