How Paris's oldest bridge will become an 'immersive cave'

French artist JR, who made his way from tagging graffiti on the street to being one of the most recognisable figures on the country's art scene, has told AFP how he plans to turn the oldest bridge in Paris into an "immersive cave" for his latest project.

Once hailed as the "French Banksy" after the secretive British street artist, JR has become famous for outsize projects, having already transformed the Palais Garnier Paris opera to look like a cave and mounted a painting that made the famous Louvre pyramid seem to disappear.

Now he intends to create a 120-metre "cave" along the Pont Neuf, the oldest bridge over the Seine in Paris, that anyone will be free to walk through.

"You will be completely lost in terms of your sense of direction and reference points in relation to the outside wo