Overview
- JR's inflatable structure was fully inflated overnight on Wednesday, May 20, and now visibly envelops the 17th‑century Pont Neuf while the site remains closed to visitors until the public opening.
- The installation measures about 120 metres long and up to 18 metres high, is formed from 80 fabric arches holding roughly 20,000 cubic metres of air, and weighs about five tons with fabric hand‑stitched by 25 artisans in Brittany.
- Engineers rehearsed controlled collapse procedures in a full‑scale test at an Orly hangar so the air‑filled cave would descend safely if power failed and the team says the design leaves no fixings on the historic stone.
- Visitors will enter a deliberately dark, free immersive experience scored by Thomas Bangalter and enhanced by an augmented‑reality layer from Snap when the cave opens 24/7 from June 6 through June 28, during which the bridge will be closed to traffic.
- JR frames La Caverne du Pont Neuf as a tribute to Christo and Jeanne‑Claude, the project is privately funded from JR's sales and partners, and organisers plan to reuse or recycle the fabric after the run as they expect large crowds during concurrent Paris cultural events.