Lower Silesian Voivodeship
…duchies under the houses of Piast, Jagiellon and Sobieski, some up to the 17th and 18th century. Chief medieval ducal capitals of the area were Wrocław, Legnica, Głogów, Świdnica and Jawor. Lower Silesia was, during the Middle Ages, one of Poland's cultural centers. The Book of Henryków (1273), which contains…