A couple of weekends ago, I made a little getaway trip down to Richmond for a few days. On my way down, I decided to experiment with a route that I had never taken before. This was PA 160, which I took between Berlin, PA near Somerset, to the PA/MD border (and on to Cumberland on MD roads). The hilly, two-lane drive ended up being so thoroughly enjoyable, with its rural ambience and constantly-visible windmills (some of which you even get pretty close to), that I was almost dismayed not to have known about it sooner.
This experience got me thinking...there have to be hundreds of drives like this out there that are largely unknown to the general traveling public, and I'd love to know about some of them, if only for my own future trip-planning edification. Of course, who better to ask about such a thing than a forum like this one?
I don't want to attach too stringent a set of rules to something like this, because everyone has their own ideas about what makes a drive "enjoyable" and I really want to know what's out there, but I guess it does make sense to say that by definition Interstates or major U.S. routes shouldn't count, and nor should well-advertised scenic routes, i.e. the Blue Ridge Parkway, the PCH, etc. But other than that, I am extremely curious as to what you all have discovered over your own travels. So, fire away.