Something I hadn't realized before (and I certainly don't remember reading about) is that Google have added Street View through the stones at Stonehenge.
This is just the most wonderful use of Street View to date:
Also, when the Google Street View guy wandered around the stones, I think they had exclusive access, since there's just not that many people around, caught in the photos. It's almost as if you were there alone. Great stuff.
Swing Out Sister - Stoned Soul Picnic
(from Shapes and Patterns)