A day in Belgium? Go fly fishing on the Amblève.
Amblève, fine little river in the West Belgium, it sounds already like good beer, good food and that special pace there is in Belgium. A short drive from Aachen or Bruxelles, or wherever you are in the area, because the trusth is once you are in what Europeans call the BENELUX, everything in reachable in a few hours. But once you’re there by the river, it’s quiet and peacefull. Check this out.