I may be partial to the AT (Appalachian Trail or The Trail) since I have hiked so much of it. It really is a special gem in the great American outdoor landscape. There are few places in the world were you can hike through a country like you can on the AT. The people are wonderful and the experience is uniquely special for every hiker. You can hike as little (just a few minutes) or as much (to Maine or Georgia) as you want and quickly get an understanding that this is something special. This is a must see in Harpers Ferry, even if all you do is hike from the river to the top of the hill.
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