Książ  Książ (pronounced: , , ) is the largest castle in the Silesia region, located in northern Wałbrzych in Lower Silesian Voivodeship, Poland. It lies within Książ Landscape Park, a protected area located in the Wałbrzyski Foothills. The castle overlooks the gorge of the Pełcznica river and is one of the Wałbrzych's main tourist attractions. A first fortification at the site was destroyed by the Bohemian forces of King Ottokar II in 1263. The Silesian duke Bolko I the Strict (d. 1301), ruler in Świdnica and Jawor, had a new castle built from 1288 to 1292 and took his residence here, adding "Lord of Książ" to his titles. The burgraviate included the neighbouring settlements of Świebodzice, Szczawno, and Pełcznica. When the last Świdnica duke Bolko II the Small died in 1368 without children, the castle's estates passed to the Luxembourg king Wenceslaus IV of Bohemia, the son of Bolko's niece Anne, while his widow Agnes of Habsburg reserved the usufruct for herself. After her death in the year 1392, King Wenceslaus, also King of the Romans since 1376, seized the Duchy of Świdnica and obtained Książ Castle. As Agnes, contrary to her limited real rights, had sold the Książ estates, the castle passed through many hands. In 1401 it was obtained by the Bohemian noble Janko of Chotěmice (d. after 1442), who later rose to a governor of the Świdnica-Jawor lands. Durning the Hussite Wars, the castle was captured by the insurgents and occupied in 1428-1429. After Janko's death, the Bohemian king George of Poděbrady acquired Książ from his descendants and transferred the administration to the Moravian general Birka of Nasiedle. In 1466 Hans von Schellendorf obtained the castle from the Bohemian Crown. The second castle complex was devastated in 1482 by Georg von Stein, a military commander in the service of the Hungarian king Matthias Corvinus while his forces campaigned the Silesian lands.