I think I've seen these before, heh. Someone should try their hands on a full scale model of Rome. Now that would be interesting. I'm also reminded me of the famous
Brick Testament, which recreates scenes from the bible also using Legos. Here for instance Jesus appearing before Pontius Pilatus:
I'm surprised actually that Lego themselves never considered Roman themed sets. There's plenty of room for interesting material: an amphitheatre, triumphal arches, aquaducts, villas, legions, chariots,...