Exhibition: at the foot of Notre-Dame, the Seine and its secrets. In the archaeological crypt of the Île de la Cité, the river is told in one hundred and fifty historical objects taken out of its waters.

Each of the 150 objects gathered in Paris seems to whisper to us The Pont Mirabeau by Apollinaire. All of them tell the story of the river. From prehistory to the present. At least a rewarding story... Because it's about looking good on the eve of the Olympic Games and the deadlines set in terms of ecology.