Chojnik Castle (pronounced HOY-nick pronounced, German: Kynast, 1945–1948 Polish: Chojnasty) is a castle located above the town of Sobieszów, today part of Jelenia Góra in southwestern Poland. Its remains stand on top of the Chojnik hill (627 m (2,057 ft)) within the Karkonosze National Park , overlooking the Jelenia Góra valley .
Chojnik Castle - Wikipedia
https://en.wikipedia.org/wiki/Chojnik_Castle