Last Tuesday, we visited Thuin, not far from Charleroi in Belgium. It is, at the moment, the place that is considered the most likely location of the Belgian defeat against the legions of Julius Caesar. Absolute certainty cannot be achieved, but it is not too far from the Sabis battlefield and Caesar's description fits the situation quite well. The matter is dealt with in N. Roymans e.a. (eds), Late Iron Age gold hoards from the Low Countries and the Caesarian conquest of Northern Gaul(2012), and you can read more here, here (with map), andhere.
To be honest, Thuin is not worth a detour, and we only went there because we wanted at least one photo for the English translation of De rand van het Rijk, the book Arjen Bosmanand I wrote about the Roman presence in the Low Country (scheduled to appear in October 2012, and probably calledEdge of Empire).Via http://rambambashi.wordpress.com/2012/07/15/thuin/