The underground metro lines are the quickest way of moving around, travel time being considerably reduced especially for lengthy journeys. The metro runs approximately every 7-10 minutes, from 5:30am until 11.30pm every day (until 0:30am on Saturdays). Ordinary tickets can be bought throughout the metro stations from vending machines or booths.
Tickets can be purchased also in newsstands and tabacchis.
From Piazza di Spagna metro station line A many major attractions are within walking distance: Pantheon, Piazza Navona, Trevi Fountain.
Use metro line B for Ancient Roman sites: it will carry you directly to the Colosseum with nearby Roman Forum and to Circo Massimo which is close to the Caracalla Baths.
Line C is of little use to tourists at the moment – it runs between Monte Compatri, about 12 miles southeast of the city, to Parco di Centocelle, on the outskirts of the centre.
At some of the smaller stations there are separate entrances for each direction and you are not able to cross to the opposite side of the line once inside the station.
Spotter Travel tip: be aware of pick pockets and frequent transportation strikes