The Lauenburg is a ruined medieval castle in the East Harz in central Germany situated on an elevation southwest of the village of Stecklenberg in Harz district in the state of Saxony-Anhalt in the former German Democratic Republic.
The castle was built in the High Middle Ages.
The ruins of the Lauenburg stand on a foothill of the Ramberg massif above the village of Stecklenberg. It was built by Henry IV and first mentioned in the records in 1164. The construction of the two-part castle with its inner and outer wards probably took up to ten years.
Wikipedia https://en.wikipedia.org/wiki/Lauenburg_Castle
Address 06502, Germany
Coordinates 51°43'37.443" N 11°5'0.804" E