In 1910, the Seine flooded to such a degree that it left marks on the columns of the Conciergerie. For his installation, Stéphane Thidet wanted to bring water from the river back into the monument.

The water for the installation is pumped up from the Seine at the base of the nearby bridge (le pont au Change), before passing over the street and entering the monument through the kitchens before getting to the salle des Gens d’armes as a waterfall.

Newt, it snakes through the gothic columns, guided by an untreated wooden structure (a little like the first rollercoasters) and eventually exits between the building’s twin stone towers, once again as a waterfall.