The castle was constructed by King Ludwig the Bavarian in 1326 to enforce toll collection on the Rhine.
Its unique shape is designed to resemble a ship, with the pointed upriver side acting as a prow to deflect ice floes.
The structure was never taken by force and successfully blocked all passing vessels during its operation.
The castle served as a strategic checkpoint for nearly 500 years until the toll system was abolished in 1867.
Prussian Field Marshal Gebhard Leberecht von Blücher famously used the island to cross the Rhine with his troops in 1814.
The walls were painted white with red accents to increase visibility and provide a warning to approaching ships.
The island lacks a natural water source, requiring residents to rely on a cistern to collect rainwater.
Napoleon once sought to have the castle demolished, but the order was never carried out.
The original entrance was located on the second floor, accessible only via a retractable wooden ladder.
Pfalzgrafenstein Castle is a 14th-century fortification built directly on the rocky island of Falkenau in the middle of the Rhine River. Known for its distinct ship-like profile, the structure was primarily used as a toll station for the Electorate of the Palatinate. The castle features a hexagonal tower and a defensive curtain wall that creates an irregular pentagonal shape. It remains one of the few river-island castles in the region that has never been captured or destroyed by military action. The current structure retains original 14th-century architectural elements, including timber-frame components added during later centuries. Access to the island is provided by a ferry service departing from the town of Kaub. The interior displays historical living quarters and rooms once used for monitoring river traffic.
The Kaub riverbank promenade provides the best wide-angle view of the castle's ship-like profile.
Wear sturdy, non-slip footwear, as the stone floors and staircases can be uneven and steep.
Bring a light jacket, as the wind chill on the Rhine can be significant even in summer.
Visit during the shoulder seasons to avoid the peak crowds of the mid-summer holiday period.
Attempting to swim to the island due to strong river currents; only use the authorized ferry.
Closed on Mondays; ferry operations are dependent on water levels and may be suspended during extreme high or low water events.
Maintain caution on narrow, steep stone stairways; follow all marked path restrictions for safety.
