On one bridge is a railway line that is no longer used. Underneath, a road sits on top of the Bièvre river which has now been covered over. People are free to enter and leave the city as they please, with only traffic lights providing a brief pause to their progress. It would appear to be just an ordinary entrance point into the city today if it wasn’t for the creations on the walls of the various bridges.
If the creations are here though it is not to mark the old city fortifications, but rather to plot the entrance into the city of the Bievre river. This hidden waterway is celebrated by a collective of artists known as the Lezarts de la Bievre who work together at various points along the ancient routes of the river across the city's left bank.
The river is in the city's sewer pipes today, but this still seems like a highly significant part of the city. The picture below shows how it looked around 150 years ago (railway, river - more of a small stream in reality - passageway, and the peuplier (poplar) trees!), and although much of the surroundings have changed, the lines and axis remain the same. The city no longer has its physical barriers, but this is still a spot where energy flows in and out.