Paris's World Fair in 1900 was also the city's introduction to this interesting innovation: the moving sidewalk. The two and a quarter mile long sidewalk featured breathtaking views of the Eiffel Tower, and topped out at around 6 miles per hour. Debuting the same year as the inauguration of the first Paris Metro line, you can imagine through this video the feeling of excitement in the city at the start of the new century as technological advances such as this were being introduced. https://www.i