The Pont Neuf folds, inflates, reveals itself, and transforms into… The Cave of Pont Neuf! JR is set to turn Paris's oldest bridge into a giant, immersive grotto where stone, light, and air carve out a one-of-a-kind experience. From June 6 to 28, 2026, walk through this optical illusion, explore its cracks, and let interactive installations reshape how you see Paris.