Unless you take your walk at a particular time of day, that is, and cross the narrow maze of streets that make up the Sentier just before its textile shops open their doors. Then the streets of this area, the hub of the Parisian textile trade since the 18th century, are buzzing with activity: clothes and bundles of cloth are piled high in the streets, thrown on top of large trolleys and hastily ferried from one building (where they have been manufactured) to the other (where they will be sold).
You would not expect it, but the area around Bourse, the Parisian stock exchange, can be surprisingly lively on weekends: some of the city's best nightclubs are located here – such as the Social Club on 142 Rue Montmartre and Le Truskel on 12 Rue Feydeau.