Paris Sewer Museum (Musée des Égouts de Paris) Tours and Tickets

One of Paris’ most unusual attractions, the Paris Sewer Museum (Musée des Égouts de Paris) celebrates the “city within a city” that lives under the capital’s streets. Stretching some 1,616 miles (2,600 kilometers), the sewers are a marvel of modern engineering—and the Paris Sewer Museum captures their history in all its pungent glory.