The Rome Metro is the rapid transit system of Rome, Italy, operated by ATAC. It is the fastest way to travel across the city, avoiding Rome's often congested streets. Although one of Europe's smaller metro networks, it consists of three lines: Line A (orange), Line B (blue), and Line C (green). Rome uses a flat-fare system within the urban Metroroma network. Tickets may be purchased from station vending machines, tobacconists (tabaccherie), and newsstands. Riders can choose from a single-trip ticket valid for 100 minutes or purchase 1-day, 2-day, or 7-day passes. The system's three lines intersect across 74 stations serving much of the city.

Line A runs between Battistini and Anagnina. Notable stops include Ottaviano for St Peter's Basilica and the Vatican Museums, Spagna for the Spanish Steps, Flaminio for Piazza del Popolo, and Barberini for the Trevi Fountain.
Line B runs between Laurentina and the northern branches serving Rebibbia and Jonio. The line divides at Bologna station. Key stops include Colosseo for the Colosseum and Roman Forum, and Circo Massimo for Circus Maximus.
Line C runs from Colosseo eastward to Monte Compatri-Pantano. Rome's newest and fully automated metro line connects with Line A at San Giovanni and Line B at Colosseo, providing improved access between the city center and eastern suburbs. - AsNotedIn