LINE A (ORANGE): Battistini to Anagnina. Key tourist stops: Spagna (Spanish Steps), Flaminio (Piazza del Popolo), Ottaviano (Vatican).

LINE B (BLUE): Laurentina to Jonio, Rebibbia to Tiburtina. For Termini use Termini.

LINE C (GREEN): Newest line from San Giovanni to Monte Compatri-Pantano. Colosseo station under construction.

OPERATING HOURS: 5:30am-11:30pm Sunday-Thursday, until 1:30am Friday-Saturday.

EXIT STRATEGY: At Spagna, use exit toward Via del Babuino for Spanish Steps (closer than Via del Tritone exit). At Ottaviano, follow Vatican Museums signs immediately upon exiting - saves 5-minute walk around the block.

Single tickets €1.50, validate before entering platform or face €50 fine.