The Paris metro system is the best method to travel around Paris. It’s made up of:
- Metro trains: On these internal Paris trains each line is a different color and number. The directions are identified by the last stop on the line, so board the train whose final destination is the same direction as your stop.
- RER trains: These trains go to the airports and farther out of the city. The different lines have letter names (A through E).
- Buses: Local buses in Paris are also a good way to see the city.
You catch RER, metro trains, and buses from the same stations – (buses also have extra stops above ground). Bus and metro trains cost the same and use the same tickets, while RER trains generally cost more. Buy tickets for all three at all metro stations. Pick up a free Petit Plan de Paris metro map and/or look at RATP for information on the Paris mass transit system.