There's an animation studio that put together cinematic quality recreations of some notable temples and buildings from ancient Rome, worth looking at here:
https://www.youtube.com/watch?v=5XxA4CX_Ip8
and I have to say that an even better title so far I'm concerned would be 'Look at how much better things are without cars!'
I've heard that there's a Gladiator movie that also did a good job capturing the look of Rome but I haven't gotten around to seeing it yet -- the one with Russell Crowe, apparently.