Wow, I want your dearie's job--getting to go to Belgium for work! I have been to Belgium but not with a bike. It's alot like the Netherlands: flat, canals, cute.

If he's there in the spring and he likes European racing, perhaps he'll be able to catch one or more of the one-day spring classics, on the cobblestones even. I hope he has a wonderful time (and that you get to go next time!)