For the 1900 Exposition Universelle, a troittoir roulant, or moving sidewalk, transported tens of thousands of visitors daily across the two miles of fairgrounds. In comparison to the Paris Métro, which also debuted during that year’s exposition, the moving sidewalk was uncovered and elevated twenty-five feet above the ground, not only offering accelerated movement but also putting vision into motion. It was therefore the subject of much artistic and popular attention—its height and speed were celebrated in prints, watercolors, and board games (also found in this room), and recorded on film.