The Vennbahn criss-crossing the Eifel region of Germany and the breathtaking landscapes of the High Fens offers yet another thrilling cycling trip. This greenway, rich in history, is an old railway line. At the start of the route, in Weywertz, the slope climbs gently. Shortly after crossing the Warche, you climb the Vennbahn without too much difficulty. In Sourbrodt, you discover the old Prussian-style station. Once upon a time, there was a hustle and bustle of activity here: the various routes brought goods from Germany and those on leave from the military camp of Elsenborn. The signal station, the long platforms and the old wagons give an idea of the importance of this railway junction. The line crosses the heart of the green lungs of Wallonia: the Hautes Fagnes nature reserve! You join Kalterherberg and head towards Montjoie. The two large curves finally bring you to Raeren and its pretty medieval castle.