I'll be doing a Mobius-strip shaped world with some of these elements for Fantasy Infinity. That may or may not be close enough to what you're looking for. It might not be out soon enough for your liking, though - we're still (counts on fingers...) nine, really closer to ten, months from my projected release date.
I'm just now in the process of pulling my art team together; there should be at least one awesome concept piece showing off this element of the setting in time for the Kickstarter in November, and of course, lots more in the finished product.