I spent a couple of years (on and off) drawing a 3d model of a starship (from my free novel) in Google SketchUp. It includes all 10 levels of the ship's interior.
It up on the net for people to look at-- obviously you need SketchUp to view it (but it's a pretty cool program and it's free).
There's also a PDF available which isn't nearly as cool.
There probably won't be a lot of people interested in seeing it, but it took so long to do that I was hoping someone else would look. It can be downloaded from http://www.scottjrobinson.com/hakahei.html