50 Hidden Gems Across America
Some aren't so "hidden" but they are lesser known. Looks like it would make a good itinerary for a marathon trip. Waterfalls, Caves, and Lakes — 50 Hidden Gems Across America
Forum Discussion
There is a great magazine published monthly called AMERICAN ROAD. Each month it examines the lesser known, the two lane routes, The "hidden" or "lost" histories and much more. I highly recommend it.
