Adrien explores the Quai de la Seine and the Bassin de la Villette in Paris. This basin is the largest artificial body of water in the city of Paris. It once served as a source of drinking water, which, incidentally, was much cleaner than the water from the Seine.

Adrien will tell you everything about the Paris metro, which opened its doors in nineteen hundred for the World's Fair. It carries an impressive five million passengers per day and is one of the busiest underground systems in the world.

Remember Lionel, who warned us about the dangers of the working world, and asked the important questions about French grammatical gender? He’s back with a very important lesson for us about how best to get water out of your ears.