I tried to achieve something similar to what I did with Egypt before. A stunning collage of symbols such as hierophants, pyramids, Sphinx...
With Rome, it could be the Coliseum or Forum with its stone statues of emperors, archways of victory, and legionnaires (which are actually of Celtic origin I think).
It is proving far more difficult. Either luck or proper prompt must be lacking even though I followed mostly the same process. Example prompts:
essence of Roman Empire,vibrant colours, brightly colored details, intricate details::2.5 erythraean, fantasy,glamour, aerial view:: --s 800 --ar 4:5
ancient Roman coliseum, vibrant colours, brightly colored details, intricate details::2 mars god of war, roman centurion helmet:: fantasy,glamour, aerial view:: --s 800 --ar 4:5
The results aren't bad. But they always include something random that clearly does not fit the picture accurately. Birds with deformed wings, statues that look like little trolls, Coliseum with an entry that would be better belonging to Forum Romana, an over-decorated centurion helmet, or skeletons for some reason.
Understandably, it is far more difficult to complete the logical placement of items in a collage for a civilization with as complex architecture as Rome had.
There are ways to remedy this to a point. I could load them up into DallE•2 and regenerate some parts. But then, there would be that peace out of place...
I chose to be satisfied with this; I will likely revisit Rome at some point, but first, I want to do civilizations with much easier architecture. Mayans, Malians, and India could work. Only then I will try the harder ones once more such as the Chinese Dynasties, Bohemian, and Greeks.
It is possible I will encounter some miracle prompts that work better than what I am currently using.