法國 巴黎 Paris RER Express Train Red Line A to Marne La Vallée station 

法國 巴黎 The Paris RER Express Train is 5 express train lines connecting Paris city centre to surrounding suburbs. Beyond the centre, the Paris RER is a ground level commuter train connecting outlying suburbs and popular destinations such as CDG Airport to the heart of Paris.
From Paris, Chatelet les Halles station to Marne La Vallée station. Travel beyond Paris Zone 1 on the RER requires a special ticket: a Billet Ile-de-France.