"Paris has another Paris under herself"

Under the city of Paris, an entire life is happening.

The whole system if from XIXth century, by Belgrand. At each time period, you discover the evolution of Paris, how the city was provided by drinking water and sanitization technics.
The visit lets you discover the networkof sewer and at the end you will be able to watch an audiovisual show.

Info:
Alma bridge, front no. 93 quai d'Orsay - Paris 7th
From Saturday to Wednesday - From 11pm to 4pm from 1/10 to 30/04
From Saturday to Wednesday - From 11pm to 5pm from 1/05 to 30/09
Fees ->4,10€ (full fee)
3,30€ (reduce fee)
Sources: HERE and HERE