Pfalzgrafenstein Castle is a toll castle known also as 'the Pfalz'. This former stronghold is famous for its picturesque and unique setting. The keep of this island castle, a pentagonal tower with its point upstream, was erected 1326 to 1327 by King Ludwig the Bavarian. Around the tower, a defensive hexagonal wall was built between 1338 to 1340. In 1477 Pfalzgrafenstein was passed as deposit to the Count of Katzenelnbogen. Later additions were made in 1607 and 1755, consisting of corner turrets, the gun bastion pointing upstream, and the characteristic baroque tower cap.
The castle functioned as a toll-collecting station that was not to be ignored, as it worked in concert with Gutenfels Castle and the fortified town of Kaub on the right side of the river. A chain across the river forced ships to submit, and uncooperative traders could be kept in the dungeon until a ransom was delivered. The dungeon was a wooden float in the well.
Unlike the vast majority of Rhine castles, 'the Pfalz' was never conquered or destroyed, withstanding not only wars, but also the natural onslaughts of ice and floods by the river. Its Spartan quarters held about twenty men.
The island of the castle was used for the Rhine crossing by 60,000 Prussian troops under Blücher in the winter of 1814 in his pursuit of Napoleon.
The castle was acquired by Prussia in 1866, and toll collections ceased in 1867. It continued to be used as a signal station for the river boat traffic for about another century. In 1946, the castle became property of the State of Rheinland–Pfalz.
The State eventually turned 'the Pfalz' into a museum and restored the color scheme of the baroque period. The museum reflects the conditions of the 14th century, and the visitor will not find modern amenities such as electricity or a lavatory. It is accessible to the public via a ferry service from nearby Kaub as long as river conditions permit.
The area is part of the Rhine Gorge, a World Heritage site.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.