14. Appian Way (Via Appia Antica)
The Appian Way was built in 312 BCE as Rome’s main road to the south, connecting the city to Brindisi. Walking here means stepping on basalt stones worn smooth by chariot wheels over two thousand years ago. It's a great sight that is surprisingly off the tourist trail in Rome.
Tombs line the road, including the round Tomb of Caecilia Metella, because Romans buried their dead outside city walls. On Sundays, the route is closed to traffic, making it easier to enjoy the quiet.
Along the way are catacombs, ancient villas, and the Church of Domine Quo Vadis, where Saint Peter is said to have met Christ. You can walk sections of it or rent a bike to explore farther into the countryside, where sheep still graze among the ruins.
15. Centrale Montemartini
Centrale Montemartini is set in Rome’s first public power plant, where Greek and Roman sculptures are displayed alongside turbines, diesel engines, and control panels. It began as a temporary home for works from the Capitoline Museums but stayed open because the setting worked so well.
You might see the colossal statue of the goddess Roma with a diesel engine behind her, or mosaics mounted against heavy machinery. With more than 400 sculptures and fewer visitors than central museums, it is a place where you can notice the details.
If you want to really get off of the tourist trail, see our guide to the best day trips from Rome.