Excursion: Weilburg | June 11, 2025
On June 11, 2025, the Panel, together with the ‘Planetary Agency/Politics’ summer fellows – Danilo Olivaz, Ingvild Syntropia & Erle Ellis, went on an excursion along the banks of the Lahn River in Weilburg, following the Lahnwanderweg (Lahn Hiking Trail) from Weilburg to Fürfurt. The excursion was organized to enrich the fellows’ project of creating an AI Avatar for the River Lahn. This project is part of a broader effort to envision political agency for natural entities, empowering rivers, forests, and ecosystems to express their needs and advocate for their rights. During the excursion, valuable insights were gathered on how the Lahn River has historically shaped the region’s ecosystem, as well as the socioeconomic and cultural life of local communities. Since ancient times, the river has played a vital role in shaping human settlements, trade routes, and cultural landmarks, serving as a living witness to the intertwined relationship between nature and humans.
Starting the hike from Weilburg town also known as the “Pearl of Lahn”, we encountered both geological and cultural landmarks. Among them was the Weilburg shipping tunnel built between 1844 and 1847. It is the oldest, longest and the only navigable ship tunnel in Germany, stretching 195 meters from north to south beneath Mühlberg hill, where the town of Weilburg is situated. The tunnel allowed vessels to bypass a roughly two-kilometer long bend in the Lahn River. It bears witness to importance of the Lahn as a transport route in the past, which from the late Middle Ages was used to carry mined ores.
We then passed the 18th-century Weilburg Castle, renowned for its impressive garden and the orangery. The castle was envisioned by Count John Ernest of Nassau-Weilburg and inspired by King Louis XIV’s Palace of Versailles. From this high vantage point, we enjoyed sweeping views of the river and the surrounding forests, vibrant with early summer life.
The hiking trail was dotted with many interesting points, including the Ernst-Dienstbach Bridge (Ernst-Dienstbach-Steg), also known as the Chain Bridge (Kettenbrücke), which has a fascinating history. This steel pedestrian bridge, rebuilt in 1946, replaced earlier structures that were vital for the town’s water supply across the Lahn River. Originally, the Red Bridge (Rothe Brücke), built between 1709 and 1710, carried lead water pipes over the river. After floods destroyed it in 1784, the Chain Bridge was constructed—the first suspension bridge of its kind in continental Europe—to support the water pipes. This system ensured a reliable water supply for Weilburg until technological upgrades in the late 19th century made it obsolete.
One of the most beautiful stretches of our trail was the part where we walked alongside the river, surrounded only by the quiet sounds of nature. At the Kirschhofen double weirs, we saw grey herons standing still at the water’s edge, while canoers passed by in a calm, steady rhythm.
The excursion provided us both physical exercise and a restorative pause for body and mind, as we reconnected with nature and reflected together on our relationship with the natural world.
Photo © Muthuwahandi