Rome is easier to understand through neighborhoods, periods, and themes than through a very long list of attractions.
Historic-center landmarks
The Pantheon, Piazza Navona, Trevi Fountain, and Spanish Steps can form a coherent and adaptable route.
Ancient Rome
The Colosseum, Forum, and Palatine deserve to be treated as one experience rather than independent stops.
Rome beyond the landmarks
A neighborhood square, a lesser-known church, or a well-chosen break can reveal more about the city than another rushed crossing.
Practical note
Information about tickets, schedules, transport, and access can change. Check official sources close to your travel date.