... with stuff like the "Great Wall of China", a on-way border, thrown in to make it interesting.
... As for the non-Classic maps I've played to date, Asia is a lot of fun. The new European map is fun, but a little hard (or maybe just poor skill and bad luck on my part).
... It's tough to make a balanced map that's fun to play on, I think. I finished a British Isles map that looks pretty good... but looking good and being good to play on are not the same thing, obviously. Time will tell.