I was doing a bit of research on this area, and Watership Down popped up. Great I thought, a beautiful place - worth a visit. I'd not read the book (or indeed sat through the whole film), but I can sing a very bad rendition of Bright Eyes...
In the end it was a bit of a let down - you could only see it from the top, and thus not see much. The view was lovely though over the Surrey/Hampshire countryside.
And I got chased by a farmer as I took a short cut and jumped a fence !