Assuming that you're not otherwise engaged,

I like some places I try and get some pics at when I've visited Rome. (I was there a month ago

)
I love the Pantheon, and it is always the first place I visit, and try to visit many times while I'm there, looking for 'the' picture. It can be very busy, but occasionally the crowds thin out a bit. I've tried long exposures, by putting the camera on a ledge (no tripods) and the movement of the people gives some interesting images. The more people are moving, the more they 'disappear' in a long exposure.

On the few times I'd visited Rome before, it was the wrong time of the year to get the light flowing straight down through the Oculus (hole in the roof) but this year I got quite close, though my lens was not wide enough (16mm on a DX cam) to get the Oculus and the all of the people bathed in light beneath. Got some I was happy with though.
The Sant'Angelo bridge (Ponte Sant'Angelo) gives a nice scene at sunset with the St Peter's Basilica in the background. There is a similar but different view from the next bridge along, the Ponte Umberto I, with the Ponte Sant'Angelo in the forground, but you can get the approach road to the Vatican in the image too.
You can get some nice views of Castle Sant'Angelo from the other side of the river beside the Ponte Sant'Angelo. I was lucky enough to get some very calm water and nice reflections, between passing tourist boats.
There are some nice views of the Colosseum at night. Walking towards the Colosseum down Via dei Fori Imerialli, there are some steps leading up to a ledge beside the Forum. You can set up a tripod on the wall and just wait to get some nice traffic trails snaking around the Colosseum. Also, across the road from the Colosseum, above the Metro station, there are some nice view to be had. While I was there the Via dei Fori Imerialli was shut on the Sunday night. I don't know if it was a usual thing or a one off, but if you want the Colosseum with or without traffic, it may be something to keep in mind.
Hope that helps.
And don't forget to show us your pics, if you take any.
