Eric Hazan leads us by the hand in this walk from Ivry to Saint-Denis, roughly following the meridian that divides Paris into east and west, and passing such familiar landmarks as the Luxembourg Gardens, the Pompidou Centre, the Gare du Nord and Montmartre, as well as little-known alleyways and arcades. Filled with historical anecdotes, geographical observations and literary references, Hazan's walk guides us through an unknown Paris.