One specific feature of the border is the route of the Vennbahn railway.[2] The Vennbahn railway route has been Belgian territory since 1919, under the provisions of the Treaty of Versailles. The Treaty decided that the former German area of Eupen-Malmedy should be ceded to Belgium, along with the entire Vennbahn railway route which crossed the border several times. Border stones can be found on the right and left of the route.