Flâneur is a French noun referring to a person, literally meaning "stroller", "lounger", "saunterer", or "loafer", but with some nuanced additional meanings. Flânerie is the act of strolling, with all of its accompanying associations. A near-synonym of the noun is boulevardier. Traditionally depicted as male, a flâneur is an ambivalent figure of urban affluence and modernity, representing the ability to wander detached from society with no other purpose than to be an acute observer of industrialized, contemporary life.
The flâneur was, first of all, a literary type from 19th-century France, essential to any picture of the streets of Paris. The word carried a set of rich associations: the man of leisure, the idler, the urban explorer, the connoisseur of the street. However, the flâneur's origins are to be found in journalism of the Restoration, and the politics of postrevolutionary public space. It was Walter Benjamin, drawing on the poetry of Charles Baudelaire, who made this figure the object of scholarly interest in the 20th century, as an emblematic archetype of urban, modern (even modernist) experience. Following Benjamin, the flâneur has become an important symbol for scholars, artists, and writers. The classic French female counterpart is the passante, dating to the works of Marcel Proust, though a 21st-century academic coinage is flâneuse, and some English-language writers simply apply the masculine flâneur also to women.
Source: Wikipedia
Further information
Honore de Balzac
Edgar Allan Poe
Marcel Proust
Walter Benjamin