I was curious about the architecture of Issgard because the ancient nordic architecture of Skyrim didn't seem so "advanced" (best word I could think of). Like did it just develop over time like Skyrim did or was there outside influence? I had a theory about Atmora a while back, that it was much more culturally diverse than we expect it which would explain the differences in the nordic ruins and castle volkihar which may date back to the same period. Or is all this still just a secret? :P