Pfalzgrafenstein Castle

KaubGermany 50° N · 7° E Updated Aug 2026

Built in 1327 as a toll barrier on a Rhine island, not a palace—this snow-white fortress is still reached only by a short five-minute ferry ride from Kaub.

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Pfalzgrafenstein Castle Photo: Jörg Braukmann · CC BY-SA 4.0
Time needed
1-2 hours
Entry
~€7 incl. return ferry
Access
Not wheelchair accessible; narrow stairs and a small ladder
Best season
Spring–autumn (ferry season)

How does a tollbooth get a pope to threaten excommunication before its walls are even finished? Pfalzgrafenstein Castle, stranded on a rocky island in the Rhine at Kaub, Germany, started life in 1327 as a revenue trap, not a royal refuge. You visit for the oddity of it: a white-plastered pentagon pointed upstream like a stone ship that never weighs anchor, 36 metres tall and still collecting the gaze of every river traveller.

From the Kaub ferry, the castle appears to rise out of the current. The Rhine slaps against a 2.6-metre-thick curtain wall — wider than a London bus — while the outer ring climbs 25 metres, about the height of an eight-storey block. Gulls circle the roofline; the only way in is a narrow iron-sheathed gate that groans when the wind shifts.

Inside, the castle gives up no royal courts. Garrison rooms, a 17th-century oven, and a well that doubled as a dungeon are the whole argument. UNESCO added the Upper Middle Rhine Valley to its World Heritage list in 2002, but Pfalzgrafenstein had been collecting tribute since long before that — first from river ships, now from the ferry ticket.

Come on a bright morning when the ferry churns over from Kaub and the white walls throw hard shadows across the water. No one stays more than an hour; the point is to stand inside a machine built to tax the river and feel the current push against seven hundred years of stubborn geometry.

Researched by the Audiala editorial team from historical records, architectural archives, and local expertise.

What to see

  1. The Stone Ship and the 1327 Keep

    From the Kaub riverbank the castle reads less like a fortress than a white ship shouldering upstream, its pointed prow aimed into the current. That silhouette is no accident: the pentagonal keep King Ludwig of Bavaria ordered in 1327 rises 36 metres, and a 17th-century ashlar cutwater, added after repeated floods, parts the Rhine like a hull. Take the passenger ferry across and the crossing becomes part of the tour — water slapping the hull, the white plaster and red-ochre trim sharpening as you close in.

  2. The Ring Wall, Dungeon and First Gun Platform

    Inside the gate, the ring wall built from 1339 wraps you in stone two and a half metres thick — wide enough to serve as both a battlement walk and a breakwater when the Rhine rises. The rooms are intentionally bare: cold stone, echoing staircases, a deep dungeon where toll dodgers waited, and cannons on the bastion added in 1606, the earliest gun platform on the Middle Rhine. Climb to the wall walk and you scan the river the way the customs men did, watching every barge for the flinch that meant unpaid duties.

  3. The Kaub Loop: Ferry, Vineyards, Gutenfels

    Give this place an afternoon and connect the island to the land that guarded it. Start at the Kaub ferry jetty, ride the two-minute crossing, then climb the vineyard path above town toward Gutenfels Castle. From that ridge the whole system snaps into place: Pfalzgrafenstein below controlling the river, Gutenfels above watching the valley, and the narrow Bacharach valley forcing every medieval boat within range. In January 1814, Blücher's army crossed here chasing Napoleon — tens of thousands of men, horses and guns — and the Blüchermuseum in Kaub's old town has the details. Finish with a glass of Riesling from the slopes you just climbed, watching the same current slide past the island.

Plan your visit

Getting There
RB10 trains from Koblenz (40 min) or Rüdesheim (15 min) stop at Kaub; walk 10 minutes to the ferry jetty at An der Autofähre. Drivers park between the B42 and the railway embankment near the Pegelhaus. There's no bridge for roughly 65 km, so the 5-minute passenger ferry is your only way onto Falkenau island.
Opening Hours
As of 2026, Feb 1–Mar 14 and November open Sat/Sun/public holidays 10:00–16:00, last ferry 15:00. Main season Mar 15–Oct 31 opens Wed–Sun and public holidays 10:00–17:00, last ferry 16:15 with an official 12:45–14:00 lunch break. December and January shut completely.
Time Needed
Give a quick visit 30–45 minutes — courtyard, tower climb, some photos. A full explore with audio guide and both banks runs 1.5–2 hours, including 30-minute ferry waits. The footprint is only 51 by 21 metres; you roam freely, no tour.
Accessibility
The island has no elevator, no ramps, and no wheelchair access; the official line is blunt: access is not possible for disabled visitors. Stairs are steep, floors uneven, and boarding the floating jetty demands a steady step. No toilets exist on the island.
Cost / Tickets
As of 2026, adults pay €8 including the passenger ferry; concessions €7, ages 6–17 €4, under-5s free. The family ticket is €8 for one adult plus up to four children, €16 for two adults plus up to four; groups of 10+ pay €7 per adult. No online booking — buy at the ferry dock; audio guide adds €1.

History

A Tollbooth That Wore a Castle's Mask

The Rhine at Kaub narrows into the Bacharach valley, a stretch where the current turns mean enough to earn the old name Wildes Gefähr — wild hazard. That was the point. Any ship that wanted through this choke point had to pass under the guns of a white pentagon that didn't care about honour, only payment.

Pfalzgrafenstein was never a noble residence. Records show it began as a customs station with walls, built by one king to divert money from merchants and rival bishops. The story most visitors miss is how close it came to being strangled by the Church before it could collect a single toll.

The turning point

Excommunicated Over a Tax Booth

The castle's official self-presentation says it protected the newly acquired territories of Kaub against the Electors of Mainz and Trier. That's not wrong. But it's only the polite version.

Pope John XXII didn't see a defensive bulwark. He saw King Ludwig IV of Bavaria — also Count Palatine of the Rhine — reaching into the same river trade that fed the church's own toll stations at the Mouse Tower and Stolzenfels. The pope pressed the bishops of Mainz, Trier, and Cologne three times to act against the Kaub toll.

Ludwig's real project was a chain-boom operation. Records show chains were raised across the navigable channel; ships that paid lowered them, ships that didn't lost cargo and crew. The dungeon was a wooden raft at the bottom of a well, and prisoners stayed there until ransom arrived. In 1339, after the bishops did nothing, Ludwig doubled down — he handed the castle to his nephew Count Rudolph II and the Counts Palatine added a twelve-metre ring wall.

Now look at the pointed upstream nose again. It was less a military flourish than an icebreaker protecting a cash flow. The castle never needed to be a noble home; it needed to outlast ice, floods, and angry merchants long enough to keep the tolls coming.

The 39-Day Test

In 1504, Landgrave William II of Hesse surrounded Pfalzgrafenstein, Kaub, and nearby Gutenfels during the War of the Succession of Landshut. Documents record a 39-day siege, a failed attempt, and a Hessian withdrawal after losing men and artillery. The castle survived unscathed. Yet the victory underscores how hard it is to take a fortress when the river itself fights for the defender — any approach by boat sits under fire from the ring wall.

Blücher's Winter Crossing

On New Year's night 1814, Field Marshal Gebhard Leberecht von Blücher chose the narrow crossing at Kaub to move roughly 60,000 Prussian and Russian soldiers, horses, and cannon over the Rhine. He was 71 years old and betting his reputation that Napoleon's lines would not expect a winter crossing here. The castle, once a toll trap, became a silent anchor for one of the operations that pushed toward Paris and Napoleon's first abdication. The Blücher Museum in Kaub still commemorates the gamble.

Tips for visitors

  • Eat before you sail

    There's not a crumb for sale on the island. Cross back to Kaub for a wine flight at Kaub-Mitte Weinbistro (mid-range) or a schnitzel at Gaststätte Zur Landebrücke (budget). The Biergarten am Pegelhaus pours casual beers by the river gauge.

  • Trust the water level

    The ferry can stop dead in low or high water — one dry June day in 2026 closed the castle. Check tor-zum-welterbe.de/pfalzgrafenstein before you set out.

  • Shoot from both banks

    For the postcard shot, stand on the Oberwesel side to frame the castle with Burg Gutenfels above Kaub. From the Kaub side you catch Schönburg Castle behind it. The ferry mid-river gives the ship's-prow angle.

  • Expect a ladder

    The keeper sometimes points you through a small wooden ladder and steep stone stairs. Wear shoes with grip; there's no dress code, but smooth soles and wet stone don't mix.

  • No island toilet

    There is no toilet on the island, and the only relief is at the Pegelhaus car park in Kaub. Go before you board; the last ferry back can be 15:00 or 16:15 depending on season.

  • Family ticket math

    The family ticket is €8 for one adult plus up to four kids — same as an adult fare, ferry included. Put the savings toward the €1 audio guide, then ask the keeper about the 1504 siege before you climb to Burg Gutenfels above town.

Frequently asked

Is Pfalzgrafenstein Castle worth visiting?

Yes, if you want a medieval customs fortress in the middle of the Rhine, not a furnished palace. The ferry crossing from Kaub is part of the appeal; Victor Hugo called the castle a stone ship anchored forever. Inside stays deliberately spartan, so come for the river setting, the echoey tower climb, and the view up to Gutenfels Castle.

How long do you need at Pfalzgrafenstein Castle?

Plan on 30 to 45 minutes on the island, then pad in ferry waits. The whole trip from the Kaub jetty and back usually takes 1.5 to 2 hours if you use the audio guide and climb to the top. Ferries run roughly every 30 minutes in season, so your return depends on that schedule.

How do I get to Pfalzgrafenstein Castle from Frankfurt?

Take the RB 10 regional train from Frankfurt Hauptbahnhof toward Koblenz and get off at Kaub; it takes about 1 hour 48 minutes. Walk 10 minutes from Kaub station to the An der Autofähre jetty, then take the passenger ferry to the island. There is no bridge, so the ferry is the only way in.

What is the best time to visit Pfalzgrafenstein Castle?

Late spring and early autumn, on a weekday morning, give you the best mix of light, fewer crowds, and open ferry service. The castle shuts in December and January, and high or low Rhine levels can cancel the ferry at any time. Autumn turns the Kaub vineyards gold, while spring often brings strong river flow from snowmelt.

Can you visit Pfalzgrafenstein Castle for free?

No, adults pay €8.00, which includes the passenger ferry; children under 6 are free. Children aged 6 to 17 pay €4.00, and a family ticket for two adults plus up to four children costs €16.00. There are no free entry days announced.

What should I not miss at Pfalzgrafenstein Castle?

Climb the 36-metre pentagonal tower for the river views, then look for the well-dungeon. Prisoners were lowered by rope onto a wooden raft at the bottom of the well until someone paid ransom. Also examine the iron-sheathed wooden portcullis near the entrance; it's a rare surviving example.

Why was Pfalzgrafenstein Castle built?

It was built in 1327 by King Ludwig of Bavaria as a toll-collecting fortress, not as a noble home. The castle sat in the narrow shipping channel near Kaub so the Elector Palatine could raise a chain boom and force ships to pay customs. The bishops of Mainz, Trier, and Cologne were angry because it threatened their own tolls.

Is Pfalzgrafenstein Castle accessible?

No, wheelchair access is not possible because the historic island site has steep narrow staircases and a floating jetty. There are no toilets on the island, no lifts, and no food for sale. Use the public barrier-free toilets at the Pegelhaus car park in Kaub before boarding.

Sources & attribution 9

Researched and written by the Audiala editorial team from historical records, architectural archives, and local expertise. Last updated August 2026.

Built from cited sources · see the method · How we make our guides →

Photo credits (1)
  1. Burg Pfalzgrafenstein 2017 — Jörg Braukmann — CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/) — Source: https://commons.wikimedia.org/wiki/File:Burg_Pfalzgrafenstein_2017.jpg

Photos may have been resized or cropped.