You may think of a sewer as nothing more than a conduit for waste, but in Paris, there's more to the sewers than meets the nose.The tunnels that make up the Paris sewer system are mostly very large'as in almost the size of a subway tunnel. In most cases a central channel, wide enough and deep enough for a boat, carries waste and runoff water; on both sides are broad, paved walkways with enough headroom for most people to walk comfortably. It's the length and complexity of the tunnels that make them so intriguing: they more or less exactly mirror the layout of the streets above'in fact, every corner has a street sign on it that mirrors the one on the surface. Where a wide boulevard runs on the surface, a wide sewer tunnel (or two) runs beneath; smaller streets have smaller sewers, and even side streets and alleys are duplicated underground. In all, there are about 1,300 miles (2,100km) of sewer tunnels underneath Paris.
Paris sewers have been a tourist attraction since 1867, when the first public tours were offered. From 1892 to 1920, visitors rode through the sewers in a locomotive-drawn wagon. In 1920 the wagon was replaced with a boat, which floated tourists along until 1975. Today's sewer tour consists of a very small portion of the sewers which has been turned into a museum. In order to read all the signs describing the timeline of sewer construction, visitors have to stand on a metal grating over an active sewer channel this arrangement serves to keep traffic moving at a lively pace. Restrooms are conveniently provided at the end so visitors can try out the system personally.
Does this sound like Dudley -- I think not.