[V__]

There are some more which are also interesting, like the Venbahn [1], Baarle-Nassau [2] or Büsingen [3].

[1] https://www.youtube.com/watch?v=KEM_cp6hVeM [2] https://www.youtube.com/watch?v=oE93J33SfHY [3] https://www.youtube.com/watch?v=kIe62qN0FEo