If you’re arriving:
By train: the TGV Montparnasse station is the closest and most accessible station at a five minute walk.
By plane: Les Cars Air France offer you a shuttle service. Notably, the Roissy – Gare Montparnasse is offered.
Underground: the “Montparnasse Bienvenue” stop is served by lines 4, 6, 12 and 13 of the RATP network.
By bus: Boulevard du Montparnasse is served by lines 92, 89, 82 and 28. Rennes Street is served by lines 94, 95, 96 and 89 du RATP network.