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The plant was built around 1090. Already in the middle of the 17th century it was a ruin. Only the pentagonal keep has been repaired several times. Laurenburg Castle was built below the castle in 1800. There are no remains of the original hill castle. The 22-m-high four-story keep probably dates from the 12th or 13th century. On its west side, an external wooden staircase leads to the high entrance, behind which the knight's hall is located. From here you can reach the upper floor via a wooden staircase and from there in a stair tower built into the eastern corner of the keep via a spiral staircase to the viewing platform. The castle is now privately owned, but is freely accessible outdoors. The keep can be viewed and climbed. From its platform there is a very good view of Laurenburg and the Lahn valley. The Knights' Hall now houses a small military museum and can be used as a wedding room for weddings.