I didn't see all the same sites as Audrey Hepburn, or fall in love with a Gregory Peck, but I did learn and witness history (President Biden and First Lady Biden visited the Pope and Vatican on our last day!!)
Highly recommend visiting:
The Vatican Museum - amazing artwork and architecture; we spent a whole day here and went through the museum twice!
Saint Peter's Basilica - free entry! View St Peter's last resting place, and Michelangelo's beautiful Pietà
Colosseum - entry is not free, and not easy to buy tickets day-of. Lots of people using casual racism to sell their guided tours 😒
Pantheon - free entry and last resting place of Raphael!
Trevi Fountain - it's illegal to sit on the fountain!
Jump below for other random Roman sites