http://www.ign.com/videos/2014/03/26/the-elder-scrolls-online-vs-skyrim-comparing-windhelm
First off I am sorry if someone shared this already but I found it immensely interesting. For those who played Skyrim a chance to revisit this land but set earlier in time in intriguing but would ESO fowl it up or do it justice? This is a video comparing Skyrim's Windhelm and ESO's Windhelm.
From the video I'd have to say that I kind of prefer Skyrim's version because it seems more ancient and also seems closer to what Nordic architecture was when Windhelm was built sometime in the Merethic Era/First Era. Windhelm would have been sort of similar in style to a Nordic Barrow like in Skyrim but in ESO it's pretty different. It seems bigger in ESO which is good but the Palace of Kings seems very different, smaller almost. Before I get heat that it's a different game and Zenimax shouldn't just copy and paste architecture and look from other games I do agree but I thought this would be an interesting debate.
Which do you prefer?
I'd say that I'd prefer Skyrim's version, at least until I am able to explore ESO's for myself versus seeing it in a video but till then I'll say Skyrim's version.