TGM — the coastal classic
Runs from Tunis Marine station (right at the eastern end of Avenue Habib Bourguiba, by the lake) all the way to La Marsa Plage — passing La Goulette, Carthage Salammbô, Carthage Hannibal, Sidi Bou Said and Marsa Plage along the way.
It's a single line, 18 stations, 35 minutes end-to-end. Trains run roughly 04:00–01:00, every 10 minutes at peak, every 20 off-peak.
Buy a paper ticket at the kiosk (0.7 TND, valid for one ride). Hold on to it; you may be checked. Trains have first-class carriages (slightly nicer, marked) for double the price — usually unnecessary.
The Carthage stops (Carthage Hannibal for the Antonine Baths and museum, Carthage Byrsa for the hilltop) and Sidi Bou Said are the tourist gold — you can do both as a 4-hour half-day from central Tunis for less than 3 TND total.


