Interesting in-scale little plastic kit on offer from Warlord Games:
http://www.warlordgames.co.uk/?p=7385
The application for 28mm historicals is obvious; what occurs to me as well is that it would make a great centerpiece for a Warriors of Chaos army in Warhammer Fantasy Battles--and (for those willing to chop something this cool up a bit) an even cooler terrain/objective!