Henry Castle on Grodna

The surviving layout is compact and based on a roughly square plan, built of brick combined with large irregular field stones. A rounded tower projects from the north‑east side and a pronounced buttress stands at the north‑west corner, giving the mass a concentrated silhouette on the hilltop. The north and south elevations end in triangular gables that are finished with battlements, reflecting the neo‑Gothic taste for dramatic crenellated outlines. The original roof form was a double‑sloped gable roof, and the nineteenth‑century record preserves that arrangement even though later work changed the coverings.

Openings in the walls display a variety of shapes and sizes, including windows set beneath segmental arches and others with Tudor‑style arches, while the tower is pierced by narrow slit openings. Entry to the building was from the west side via an external stair. Inside, two rooms were arranged one above the other and covered with vaulting, and historic accounts record that the glass in the windows was painted. From the nineteenth‑century reconstruction the present remains include the perimeter walls and the tower; these elements stand without their original horizontal floors and roof structures. On a rock to the north of the ruin there are carved beam‑nests, small sockets cut to receive timber, which are interpreted as the probable footprint of an additional building. Finally, the ceramic sherds found north of the ruin, dated to the thirteenth century, mark earlier activity in the immediate environs of the castle. The ruin occupies the summit of Grodna, near the spa at Cieplice and roughly nine kilometres from Jelenia Góra.