They’re not just attractive, they’re wonderful.
Many books have been written about them.
Here’s one:
http://www.amazon.com/Sermons-Stone-Walls-England-York/dp/039331202X/ref=pd_sim_b_3
Here’s another:
http://www.amazon.com/Stone-Magnificent-History-Englands-Walls/dp/0802776876/ref=pd_bxgy_b_text_b
.
Thanks for the book reccomends. I’ve put these two on my summer reading list, and have pointed them out to a couple of other Freepers who’ve asked me about the subject.