I've been hearing great things about the new Fort Apache from Paragon Scenics. Gene, the owner and creator of these pieces, is a friend of mine, and his contributions to this hobby have been nothing short of amazing. I have his new figures on order and hope to have them in my hands in a few days.
I remember getting a close look at his other big fort, the Mountain Fortress, and was blown away by the detail of it. lots of nooks to hide figures for all sorts of fun times, and this new setup looks just as good. The whole thing looks very modular, so you could probably get pretty creative with it.
I definitely need a bigger table!!