Arc de Triomphe de l'Etoile, Paris

For three decades starting in 1854, Paris was a construction site as Baron Haussmann replaced the crooked streets and crumbling buildings of medieval Paris with a modern city. The cobblestones in the foreground were for paving the newly expanded set of broad avenues that radiated from the Arc, part of Baron Haussmann’s urban renewal plans. Exposure times for film in the 1860s were usually too long to capture people in the street, but a man—perhaps the paver—paused long enough to leave his “ghost” to the left of the cobblestones.