For some inspiration may I suggest looking at this article. It has a large picture of a large Osgiliath board. I hope this inspires you.
Looking forward to seeing this board being constructed.

http://www.games-workshop.com/gws/content/article.jsp?catId=&categoryId=800029a&section=whiteDwarf&aId=2000026a

You have to be a GW member though.

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When you do things right, people won't be sure you've done anything at all.

Backlog Reduction Oath Participant - 6/53

Alright guys im back from my long absence. I have set my goal to finish this project before May 9th. With the release of the Ruins of Osgiliath building set we can overcome a small roadblock we hit (we are still making most of the buildings though). I think everything looks great so far and pictures will be up when i can get my camera. I want to thank anyone that still has any interest in this project.

I will be watching this thread close & yep I'm always interested in terrain/scenery making. Hope to see some pictures up soon

Sorry about the quality of the pictures...I was using my cellphone camera.