i was looking at the cover of 'The Infernal City', and think that floating city looks cool. it reminds me of the floating Ministry of Truth. i know that skyrim will have it's own architecture, more rugged, snowy, tons of mountains. but i also hope we'll see lots of locations that looked like it was created with magic. Sort of like Tel mora, with those beautiful tree like structures.

Nords aren't very magic oriented people, so I'm not sure there will be magically created cities, but hopefully the Nordic architecture is cool enough to make up for it.