Some more ideas : more than enough to fill a week or more !
I made a selection from our founds, there are many more (nearest) that you could like :
History caches
Guillaume was 15 small walk, sad story
Band of Brothers - Bastogne - Part 6 thematic cache near historic Bastogne
Battle of the Bulge Just one example : look for more in nearest !
Some great thematic caches, full of historic information, placed for an event that took place here !
"Border" caches
We enjoyed these two walks, along the BE-D border and BE-L border
Grenzwanderweg
Belgium Crossfire
Nice walk caches
Petite Mormont - Achouffe Not too hard, very good
Pick this up !
MAILBOX (Luxembourg) When you're near, try to do this one : just make sure you come equiped with a post card, that will be mailed to you ! Fun idea.
If you're going to Luxemburg (L)
Bommeleer Attack # 2 We loved this series of theme caches, with plenty of information.
Obviously, there is many more. From the geocaching.be site, you can get a map with caches, which allows you to zoom and check on the places you are planning to visit.
Hope this helps, or triggers some others to visit these caches.
Enjoy your holiday,
Johan