Hohennagold Castle is a ruined castle situated on a hill, the so-called
Schlossberg (castle mountain), overlooking the
Black Forest town of
Nagold. The hill consists predominantly of
porphyritic rock. The ruins represent a relatively well-preserved 12th-century castle. The
keep behind the
curtain walls, a
tower in the north-western corner of the complex as well as the
outer ward with half-round and angular towers, are still visible. Around the castle there appears to have been a
moat.