Also, The more country parts of Luxembourg are also pretty cool, if a little stayed and maybe a little "generally European."
After Luxembourg, I rode the Teutonic Mosel. The Mosel in Luxembourg was lovely, but more like a quiet, clean, quietly good living area where I would want to hide out in a witness protection program than a great short trip tourist destination.
There are a lot more vineyards in Luxembourg than I expected. Luxembourgish wines were far far better than I'd expected. I'm a wine geek with a big cellar and pretty good knowledge, so I knew that the wines of Luxembourg would not be bad, but they were really very good. The whites in general have Mosel-like character, but with a bit more crispness and aromatics like they have a little bit of the spirit of white Bordeaux waved over them. Well worth sampling a lot of the local wines in Luxembourg, if of course that is your thing.