It's worth an hours-long trip! Make sure you take the Metro; Arts et Metiers is a gorgeous station. http://onesmallwindow.com/the-life/the-coolest-museum-in-pa

It's worth an hours-long trip! Make sure you take the Metro; Arts et Metiers is a gorgeous station. http://onesmallwindow.com/the-life/the-coolest-museum-in-paris-musee-des-arts-et-metiers/ http://onesmallwindow.com/the-life/the-coolest-museum-in-par...