Whilst stationed on the German/Dutch border in the 90's with the RAF we used to go to a site at Hengelehof which was in Belgium on the road to Brussels, the A2 I think. The site was right next to a large swimming complex complete with slides and a set of rapids that went on for ever - really wild! There was also, virtually across the road from the site, an open air museum consisting of old buildings which had been dismantled and rebuilt at the site. They had an old bakery that made the most delicious honey and fruit cookies - I drool at the memory!