Argentine artist Leandro Erlich—known for wowing viewers with eye-defying installations—has created a new set of temporary artworks at Paris’s Le Bon Marché. Titled “Sous le ciel” (after a famous Edith Piaf song meaning “Under the sky of Paris”), Erlich transformed the iconic department store into a fantastic world of clouds, light, and upended reality.

The experience begins outside with store windows filled with fluffy floating clouds. The motif continues within, where large sections of the store’s glass roof have been replaced with screens showing wispy white clouds scudding across a blue sky. The light in the space also changes depending on the time and season.