There's a castle in Germany with a unique, self-supporting bridge.
Königstein Fortress, a 17th-century castle located on a rocky outcrop overlooking the Elbe River, boasts a 200-meter-long, stone-arch bridge known as the "Baedeker Bridge" or "Bückling". Built in 1913, this bridge is remarkable for its ability to support itself without any visible support structures, making it one of the most striking and photographed bridges in Europe. The castle's strategic location and innovative engineering made it a formidable fortress during its time.