We fly in to Frankfurt and have about 4 days to drive around and ideally head toward Belgium in search of quaint villages, castles, monastaries, etc with BEER and good Wine. Any restaurant rec's and general travel tips would be SO helpful. We've never been to this area and just so far have a car and then a plane ticket to Berlin a few days later (found great stuff on here already re: berlin).
Any tip would be greatly appreciated. THANKS