The Chojnik Castle one can reach within 3 hours setting off from the bus stop (PKS) in Bierutowice (Wang). You should take the green trail through the forest to Borowice, then to Przesieka passing by the Podgórna Waterfall towards Zachełmie.
The ruins of the castle are situated on a granite hill. It is an enclave of Karkonosze National Park. The Educational Trail Signs can help you to gain the some knowledge about flora and fauna of this region. Worth seeing are also rock formations such as Zbójeckie Rocks, Głazowisko, and Devil's Rock.