Flâneur
Around 1850, Baudelaire began asserting that traditional art was inadequate for the new dynamic complications of modern life. Social and economic changes brought by industrialization demanded that the artist immerse himself in the metropolis and become, in Baudelaire's phrase, 'a botanist of the sidewalk', an analytical connoisseur of the urban fabric. Because he coined the word about Parisians, the 'flâneur' (the one who strolls) and the 'flânerie' (the stroll) are associated with Paris and the kind of pedestrian environment which accommodates leisurely exploration .... Walter Benjamin adopted this concept of the urban observer both as an analytical tool and as a lifestyle. ... His flâneur is an uninvolved but highly perceptive bourgeois dilettante. Benjamin became his own prime example, gathering his social and aesthetic observations from long walks through Paris. Even the title of his unfinished Arcades Project comes from his affection for covered shopping streets.
But then there is Wiktionary, its sister site, which says its a Dutch word:
1. A person who likes to parade about town in order to be seen.
2. (Flemish) A saunterer; a lounger.