To go along with the Watership Down reread -
feel free to add your thoughts here! - I went looking for a website I found ages and ages ago, with photos of the real-life locations. I didn't think it would still be online and it's not (this was like 1999 or something; I was young enough to be shocked and amazed because I didn't know the places in the book were real - it was like seeing photos of Middle Earth).
But I did find
a site with closeup maps with locations marked and
a walking tour of Watership Down and its environs with some photos.
I wish I could find something analogous to the original page, because it was really comprehensive and lovely, with pictures of the power pylons and the river and other places, not just the downs, which is all that seems to be online now.
Anyway, hopefully this will be nice for some visuals for the reread, and if you know of any other good sites like that, please chime in!
Edit:
Found on the Wayback Machine by
ratcreature! Some of the images don't load, but enough of them do to get a pretty good feel for a lot of the places in the book. I highly recommend checking it out.