The disputed remains of the rock castle Pařez near the village of the same name in the area of the attractive Prachovské Rocks. You won't enjoy the medieval masonry much, but you can sleep in relatively spacious, dry and clean artificially excavated rooms under the top of the rock.
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Off peak season.
Simply follow the red trail from Pařezová Lhota, it is unmissable on the map and in the terrain.
Bydlím nedaleko a párkrát do roka tam zavítám. A je to tam v pohodě. Celoroční přespání v několika skalních místnostech.