In his photobookAmerican Night(2003), the photographer Paul Graham evokes the passage of a walker who draws the outline of a composite and dialectic map of the American city. This article will examine how the book's structure and its division into zones is symptomatic of the explosion of the city and of its spatial, social and racial inequalities. These zones are also spaces of invisibility and visibility, of over-/perfect/under-exposure, illuminating the social/racial contrasts that underpin the urban environment and the mechanisms of their perpetuation. In this sense,American Nightultimately exposes the biopolitical struggle that underscores the American city.