At the centre is a huge ten-metre-long glowing blue figure lying inside a glass casket, half-human and half-fantasy, slowly rising and falling as if breathing. It’s strangely peaceful, almost hypnotic, and you can sit right there on the steps surrounding it.

Many of these pieces, delicate and century-old, are unlikely to be displayed again — making this a rare, perhaps once-in-a-lifetime chance to have seen them up close.

To celebrate, the Grand Palais has invited Euphoria—the travelling immersive exhibition by the Balloon Museum—to take over the newly unveiled nave until 7 September 2025. And yes, it’s exactly what it sounds like: huge inflatable artworks, light-and-sound installations, sensory tunnels, a “bubble bath” of black balls with 360° visuals, and more air-themed joy than you knew you needed.

Narrated by the fabulous Cate Blanchett, this larger-than-life exhibition takes visitors on a journey through time, from the intimate coutur