I was in Geilenkirchen, north of Aachen for three years. Loved the assignment, travelled a BUNCH, and met a lot of really great people.
While I was there, I was involved with a group of Dutch airplane wreck hunters. They located the remains of a B-17 that crashed on the Dutch-German border in 1944, and a Messerschitt ME202 that crashed in 1945. Lots of fascinating things there, no doubt.
We also toured a portion of the WWI Maginot Line, not too far from Spa, Belgium. The sense of history is profound.