Historians agree that around 1900 the concept of adolescence was reworked, valorized, and given scientific legitimacy. In Western political, pedagogical, philanthropic, and literary circles, an understanding of adolescence as a distinct and universal stage of life achieved currency. However, broad studies have glossed over local differences in provision for and representations of adolescence. By comparing representations of adolescence drawn from voluntary provision and the workplace in two cities, Nottingham (England) and Saint-Etienne (France), this article highlights the cultural relativity of this construct, the different rhythms of its institutionalization, and the motives that led local interest groups to emphasize or underplay its significance.On July 13, 1899, a crowd of six thousand young people gathered in the Bois de Boulogne on the western edge of Paris to perform in a "festival of adolescence." Having made their way to the Pré Catélan at the center of the park, they took part in a variety of displays, including marches, physical exercises, songs, and music, before an assembled crowd of twelve thousand adults. Those who participated in this spectacle were members of Republican after-school societies: patronages, amicales, and alumni societies. In the notes of the accompanying program, the municipal council of Paris, which organized the event, admitted that it had been "looking for an opportunity to show its support for the various after-school societies" for "some time." 1 Through this event, the council made adolescence and the efforts to provide for adolescents the central focus of civic celebration.The Paris festival provided a public, ritual expression of a more general and growing concern about this life stage. A fascination with adolescence had begun to permeate scientific, pedagogical, and literary studies in France from the 1880s.