Réseau Express Régional; similar to the Métro except that it also serves the outlying suburbs and regions of Paris In the center of the city, the distance between RER stations is more significant than for the Métro; an advantage if you want to go larger distances quickly - even in the center of the city
Réseau Express Régional; similar to the Métro except that it also serves the outlying suburbs and regions of Paris In the center of the city, the distance between RER stations is more significant than for the Métro; an advantage if you want to go larger distances quickly - even in the center of the city