French artist JR opened the ephemeral installation "La Caverne" to the public on the Pont-Neuf in Paris on Monday, June 15, 2026 [1, 2].

The opening marks the completion of emergency repairs to a monumental work that was severely damaged by weather, ensuring the project remains accessible to the public in the heart of the city.

The installation is 120 meters long and 18 meters high [5]. It was originally scheduled to open on June 6, 2026, but suffered a delay of nine days [1, 3]. The setback occurred after a strong gust and storm on June 2, 2026, damaged the structure [4].

JR and his team worked extensively to restore the artwork before the surprise opening. "We spent days and nights rebuilding it," JR said [3]. Following the repairs, the artist invited the public to experience the site, saying, "We are opening, come!" [2].

The city of Paris previously described the work as a monumental and ephemeral piece that is free to visit [6]. While some initial reports suggested the installation would be accessible through June 28, 2026 [5], the official opening was delayed until this Monday [2].

The project represents a significant logistical effort to maintain a large-scale public installation against unpredictable environmental factors. The scale of the work, stretching 120 meters across the historic bridge, required precise reconstruction to ensure public safety and artistic integrity [5].

“"We spent days and nights rebuilding it,"”

The delayed opening of La Caverne highlights the vulnerability of large-scale, ephemeral public art to extreme weather events. By repairing the structure rather than cancelling the exhibit, JR and the city of Paris emphasize the commitment to public accessibility and the resilience of temporary urban installations.