Pfalzgrafenstein - near Kaub
King Lewis the Bavarian erected Pfalzgrafenstein Castle around 1326 on a rock in the Rhine, as a customs toll castle.
The oldest part of the structure is the pentagonal tower in the castle courtyard with its apex facing upstream.
The 12-meter high hexagonal ring wall with its defensive passageway and corner turrets was constructed a few years later.
The second defensive passage, the gun bastion facing upstream, and the
elegant tower cap are reconstructions from the 17th and 18th centuries.