Yep, Here's a closeup of the imperial box (which still needs detailing)
Ave Caesar - Buildings ready for detailing. by kaitain, on Flickr
and an earlier shot of the track on its own.
Ave Caesar - Work in Progress by kaitain, on Flickr
The whole thing is modular. The track is made up of ten 48x48 baseplates and the buildings are built on 16x16 and 16x32 baseplates. The four corners hang over the edge of the track, and are built on a 16 wide baseplate L arrangement. The weight of the corner keeps the columns on the baseplate as they just rest on tiles. The 2nd storey is detachable on both arches and all the seating sections. The temple and imperial box come apart as well.
More WIP shots can be found on my Flickr photostream, along with my previous MCOs, a pirate display that I did last year, and the Euro Disney haunted house in 2008.
Regards
Kaitain
For that I've got to thank Lego Monster, another Brickish Member, who is a whiz with that sort of stuff. He rattled them out in about 10 minutes whilst visiting with his wife one weekend. I won't be able to squeeze Latin Inscriptions in SNOT on the arches so its going to be Photoshop'd bronze lettering printed onto transparency film and then slipped in front of the white panels. I just need to find some suitable inscriptions. The "Romanes Eunt Domus" is a given, for one of the corner sections or near a stairwell.
Kaitain