Unrealistic towns in Heroes of Might and Magic V.

I don't know about you, but I've always disliked and found this irritating...
Okay, on a map, a Dungeon or Inferno castle being underground is fine (as it should be), but when an Academy or Sylvan castle is underground, that's just too much.
How can an Academy castle end up underground when it's supposed to be in the sky, and a Dungeon castle on the surface when it should be underground?
I hope this will be fixed. Otherwise, it's just nonsense, in my opinion. There's no sense of realism at all; it just feels like the mapmakers were too lazy to do things properly.