18. 14th arrondissement
While you may go to Montparnasse to catch a train at some point, the likelihood that you hang out in this neighborhood on your down time is almost nil. There was a time, however, when Montparnasse was a happening place, and because of that, a visit to Le Dôme is a must (Hemingway was a regular!). Other neighborhood notables are L’Assiette, where the specialties are the heavy stew and cassoulet, and Ti Jos, which opened in 1937 and is the 'hood’s oldest creperie.