The Silesian duke Bolko I the Strict (d. 1301), ruler in Świdnica and Jawor, had a new castle built from 1288 to 1292[2] and took his residence here, adding Lord of Książ to his titles.

As Agnes, contrary to her limited real rights, had sold the Książ estates, the castle passed through many hands.

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.

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 in Silesia.

[4][5] Construction works were carried out under inhumane conditions by forced labourers and inmates of Gross-Rosen concentration camp.

Parts of the historic building structure were demolished during reconstruction; numerous artefacts were stolen or destroyed during the Soviet occupation.