The ruins of Breitenstein Castle (German: Burg Breitenstein) stand on a crag, 220 metres (720 ft) high, on the northern side of the Speyerbach valley in the Palatine Forest in Germany. The castles is 4 kilometres (2.5 mi) east of the village of Elmstein in the county of Bad Dürkheim in the state of Rhineland-Palatinate.