Humpback Rock in Virginia, which is part of the Blue Ridge Parkway, is a free to access viewpoint providing you with a great view of the surrounding area. The rock itself is greenstone and the name is from how it looks like a 'hump' and is located near the peak of Humpback Mountain.
It is 10 km (milepost 5.8) south of the northern entrance of the Blue Ridge Parkway and it a 3.2 km (2 mile) round-trip hike. You will gain 740 ft (230 m) in elevation and it will probably take you roughly 1 hour to do the hike itself and however much time you need to take pictures and breaks.
Well worth a visit if you are in the area; I hope the stats don't scare you from doing the hike itself.
Come back next Friday for another Past Point of Interest!