This video was created by French musicologist Mylène Pardoen and a team of 3D artists. It is a soundscape of 18th century Paris created using documents of the period and sounds produced almost entirely from real sources, including antique tools. It is even book-related as one of the sounds is the setting of type in print shops on the Rue de Gesvres. The video starts slowly, but it is worth being patient.
If you want to learn more about the project, you can link to an article (in English) here.
Enjoy your free trip to Paris!