Here you are in Paris’s former industrial heartland. Old factory buildings house hip live music venues such as La Bellevilloise and La Maroquinerie, while grungy bars along hilly Rue de Ménilmontant lead to warrens of narrow, cobblestone streets and artists’ studios. Musée Édith Piaf, set in the tiny French crooner’s former apartment, is a private mini-museum filled with memorabilia.