Pfalzgrafenstein Castle

Listen first to the water. The Rhine moves past here with a low, steady rush, and the hull of every passing barge adds a deep engine hum. In front of you, on a narrow island of rock and gravel, sits a pale stone castle shaped like a ship. Its pointed end faces upstream, into the current. It looks almost as if it is sailing against the river. In a way, for nearly seven hundred years, it has been doing exactly that.

This is Pfalzgrafenstein, a toll castle in the middle of the Rhine beside the small town of Kaub. It was never a palace. Nobody built it for comfort or for show. It was built for one purpose — to stop ships and make them pay. The Rhine was the great trade road of medieval Europe. Wine, salt, timber, cloth and grain all moved along it. Whoever controlled a narrow point on the river could collect money from all of them.

The story begins in the early fourteenth century. Around 1326 and 1327, Ludwig the Bavarian, who ruled as king and later as Holy Roman Emperor, ordered a tower built on this island. The tower came first. It has five sides, and its sharp edge points upstream. That shape was practical. It split the water, the floating ice and the debris that came down the river in winter and spring. The curtain wall around the tower followed some years later.

Here is a detail many visitors miss. The building of this castle caused a quarrel with the Pope. Pope John the Twenty-Second was already in a long and bitter conflict with Ludwig over power and authority. A new toll station on the Rhine only made things worse. The Pope protested strongly against it and threatened the people responsible with excommunication, which meant being cut off from the Church. The tower was built anyway, and it still stands.

For centuries, the castle belonged to the Counts Palatine of the Rhine, powerful princes of the Holy Roman Empire. Their German title, Pfalzgraf, gives the castle its name. Pfalzgrafenstein simply means the stone of the Count Palatine. The castle worked together with Gutenfels Castle, which you can see on the hillside above Kaub. Gutenfels watched from above, and the island castle controlled the river itself. Together they made this stretch of water very difficult to pass without paying.

How did the toll actually work? Ships were made to stop here, and their cargo was checked and charged. A popular story says that a heavy chain could be stretched across the river to block the way. Historians are not certain this was really used, so it is best to treat the chain as local legend. What is certain is simpler. The river here was hard to navigate, and the castle sat right where boats had to pass close by.

Now look at the walls themselves. They are thick, plain and pierced by small openings for watching and for defence. Above them, the central tower rises with a dark, curved roof and a small lantern on top. That roof is not medieval. It was added in the eighteenth century, in the Baroque style, which favoured curved and decorative shapes. So the castle you see is a mix of periods. The base is a fortress, and the top is a later, softer crown.

Inside, the rooms are small and simple. There are narrow stairs, wooden floors, gun ports and a little courtyard. There is no great hall and no royal bedroom. This was a working building for toll collectors and guards. Locals also tell a dark tale about the castle's prison. According to the story, prisoners were lowered into a deep shaft and kept on a wooden raft, floating on the water inside. It is a grim image, and guides still repeat it.

The second surprise comes from the age of Napoleon. On New Year's night between 1813 and 1814, the Prussian field marshal Blücher crossed the Rhine right here at Kaub. His army was pursuing Napoleon's forces back into France. Engineers built a bridge of boats across the river, using the island as part of the crossing. Thousands of soldiers, horses and cannons passed this castle in the cold and dark. In the town of Kaub, a museum and a monument still remember that night.

The tolls lasted far longer than you might expect. Charging ships on the Rhine continued until the second half of the nineteenth century, when the river tolls were finally abolished. After that, the castle lost its purpose. For a time it served as a signal station, helping boats through the difficult waters of this part of the river. Today it is a monument and a museum, cared for by the state of Rhineland-Palatinate.

The castle is part of a much larger landscape. This whole stretch of river, the Upper Middle Rhine Valley, is a UNESCO World Heritage Site. Look around and you will see why. Steep slopes of vineyards rise on both banks. Castles sit on nearly every high point. Small towns line the water, with church towers and slate roofs. Kaub itself was once a slate mining town, and that dark grey stone covers many of the roofs you can see from here.

To reach the island, you take a small ferry from Kaub. The crossing is short, but it is worth paying attention. From the boat, you see the castle from water level, the way medieval sailors saw it. The walls rise straight out of the river. When the water is high, the island almost disappears, and the castle seems to float. When the water is low, you can see the rocky base and the gravel banks around it.

Before you leave, stand still for a moment and watch the river traffic. Long cargo barges still move past this island, carrying coal, containers and fuel. They no longer stop to pay, but they follow the same channel that ships followed seven centuries ago. Notice the vineyards above, the trains running along both banks, and the pale walls in the middle of it all. As you walk away, look back once. The stone ship is still pointing upstream, still holding its place against the current.