With some 3km of forest-green boxes lining the Seine – containing over 300,000 secondhand (and often out-of-print) books, rare magazines, postcards and old advertising posters – Paris' bouquinistes (used-book sellers) are as integral to the cityscape as the Panthéon. Many open only from spring to autumn (and many shut in August), but year-round you’ll still find some to browse.
The bouquinistes have been in business since the 16th century, when they were itinerant peddlers selling their wares on Parisian bridges; back then their sometimes subversive (eg Protestant) materials could get them into trouble with the authorities. By 1859 the city had finally wised up: official licences were issued, space (10m of railing) was rented and eventually the permanent green boxes were installed.
Today, bouquinistes (the official count ranges from 200 to 240) are allowed to have four boxes, only one of which can be used to sell souvenirs. Look hard enough and you just might find some real treasures: old comic books, forgotten first editions, maps, stamps, erotica and prewar newspapers – as in centuries past, it's all there, waiting to be rediscovered.