Shortly after the tour starts in Willingen, you come to Lake Diemelsee surrounded by wooded slopes in the Upland region, a paradise for anglers and water sports enthusiasts – and the perfect backdrop for the cycle route which runs right along its shores. You then come to Marsberg with its medieval old quarter before continuing to the old Hanseatic town of Warburg. Near Liebenau you can see some burial mounds from the Bronze Age, and there are plenty of castles and palaces as well. Trendelburg Castle, for example, watches over the town of the same name, and in the Diemel valley you can see the moated castle at Wülmersen and Castle Krukenburg. The route ends in Bad Karlshafen on the Weser river. Terrain: the Diemel Cycle Route runs alongside the river on well-maintained, mostly asphalt paths. It is easy to negotiate with hardly any steep climbs. Traffic volumes are very low throughout. Scenery: the route runs past Lake Diemelsee nature reserve, around the Diemel reservoir and through partly wooded, gently rolling hills and uplands to where the Diemel flows into the Weser.