hello there! this project struck me as fascinating, so i made a proof-of-concept in minecraft since it's a fast way to hash out concepts like these. i made the map as true to your images as possible, and it came out feeling very nice and ethereal. this is definitely an idea that should get made, imo!
here are some images of the portions modeled directly after your drawings:
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now, i had to guesstimate what the exact layout of this age would be, so this is what the entire complex ended up looking like:
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the very long, curved rails are stand-ins for the zeppelins. they move quite a bit faster than i wish they would, since i picture zeppelin rides slow and smooth. i also added two little alcoves on two seperate islands. they're there so you can switch the time of day between dusk and dawn, the two major times shown in your concept art. since time in minecraft blazes by pretty quick, i ended up freezing time in this map; so you have to use the buttons if you want to switch between the dusk/dawn. lastly, the book you spawn in front of is supposed to be the link back to nexus, or wherever it is you link back to.
there are no puzzles, this is purely an attempt to capture your renderings and turn them into a crude 3-D environment.
Here is a download if you'd like to explore this proof of concept first hand: http://www.mediafire.com/download/wa4r1q34htulm5z/Airbora.rar
. keep in mind you need to have a version of minecraft that can run the latest update to check this out; since this is made using a ton of invisible blocks only available in version 1.8. they're there to make sure you don't fall off
EDIT: oh wow, just realized how old this post was. erm...carry on, i guess. or; if someone has aaron's blessing to work on this concept, then feel free to tool around with this as well.