Surprised it took 4 pages for this to come up. Throwing in my vote for Ni No Kuni though (in terms of classic RPG overworld maps). I mean damn, that game is just straight up gorgeous
It's not just nostalgia. FF6 on the SNES was very well put together and looked great, at least in its own time. The iOS version is lazy and poorly designed. They did some pretty good work on battle backgrounds and monster sprites, but they seemed to go out of their way to make the character sprites look generic and muddy.