A non-profit group has organized centered around the Rt. 15/231 corridor between Gettysburg and Monticello called Hallowed Ground.
From the website:
Explore The Journey Through Hallowed Ground, a scenic and historically rich landscape recognized as the region which holds more American history than any other swath of land in the country. It is home to significant and unique historical, cultural, scenic and natural legacies. The Journey Through Hallowed Ground corridor follows US Route 15 and Route 20 on a 175-mile meandering course from Gettysburg, Pennsylvania, through Frederick County, Maryland and ending in Charlottesville, Virginia.
Looks like a rather interesting website, and for those of you who may live in this region, there are opportunities to submit and include local historic sites.
What a great project, and certainly a good thing for Virginia tourism.