https://en.wikipedia.org/wiki/Vennbahn

The Vennbahn is a former railway line that was built partly across what was then German territory by the Prussian state railways. It is now entirely in Belgium, because the trackbed of the line, as well as the ... Map of the route of the Vennbahn. The pre-1958 Belgian-German border south of Roetgen differed from that shown.

https://fascinatingmaps.com/strange-german-exclaves-in-belgium-vennbahn/

Sep 15, 2018 ... These enclaves/exclaves are located along the border of the European countries of Belgium and Germany, just south of the city of Aachen.

https://travel.stackexchange.com/questions/105503/is-this-weird-area-on-the-belgium-germany-border-a-walkway-or-something-differen

The entire area and a good deal West of it used to be German territory at the beginning of the 20th century. In the late 19th century, a railway ...

https://www.telegraph.co.uk/travel/destinations/europe/articles/quirky-european-enclaves-where-cultures-collide/

Aug 7, 2016 ... Like a pocket of Germany in the middle of Switzerland, for example. ... A cluster of 22 Belgian and eight Dutch enclaves with a border that ...

http://www.espaces-transfrontaliers.org/en/bdd-borders/frontiers/frontier/show/allemagne-belgique/

At 167 km in length, the German-Belgian border separates the Belgian region of Liège and the German regions of North Rhine-Westphalia and ...

https://fotostrasse.com/three-country-border-aachen/

Our first time visiting a three country border was in Aachen. We wanted to go to Dreiländereck where Germany, Netherlands and Belgium meet.

http://themagiscian.com/2014/10/29/belgium-germany-border/

Oct 29, 2014 ... Belgium, small country in Western Europe, shares its borders with The Netherlands, Germany, Luxembourg and France. The length of the ...

http://www.transfrontier.eu/regions/meuse-rhine-dutch-german-belgium-border/

The Meuse-Rhine Euregion created in 1976, with judicial status achieved in 1991 is an “Old” European border between Belgium, the Netherlands and Germany.

https://www.citylab.com/equity/2012/02/most-complicated-border-town-world/1267/

Feb 17, 2012 ... In Baarle-Nassau, pieces of Belgium and the Netherlands sit side-by-side, creating some strange municipal politics.

https://www.youtube.com/watch?v=zwZ2IuqDTh8

Feb 6, 2016 ... There are approximately 176 international "Tripoints" (border of 3 countries) on earth! and this one: Vaalserberg, is one of them. It is the border ...