Walking is the best way to explore Rome's attractions as it is easy to move around the city on foot. Additionally, public transport such as buses, trams, and Metro can be used if you need to cover longer distances. A single bus or tram ride costs €1.50, and a metro ride costs €1.50-€2.00, depending on the distance traveled. Taxis are also available but are expensive and may encounter traffic.
If you have more time, consider visiting other historical landmarks like The Vatican, the Roman Catacombs, and the Spanish steps. Alternatively, if you have less time in Rome, you can cut short your visit to places like Gianicolo Hill and Trevi Fountain. You can also fit in a visit to the Borghese Gallery and Museum if you have extra time.