Seattle area riders are probably familiar with this stretch of road in Redmond.
http://www.historylink.org/essays/ou...m?file_id=2363
It's nearly a century old and shows it. It may not be the Arenberg Forest, but on a rainy day it's pretty exciting for me. You can also take your life in your hands and dart across the Redmond Fall City road and spend a few minutes continuing east on 50th street, better known as the Happy Valley Road. This narrow old road is as close to a lane in the Ardennes as any road I've seen in the US. The cool thing about both roads is that they lie within a couple of hundred yards of busy suburban arterials.