Visitors to the Louvre in Paris are being greeted with an unfamiliar sight: IM Pei 's iconic glass pyramid, a Parisian landmark that has served as the renowned museum's entrance since 1989, is still there, but you'd be forgiven for being confused, thanks to a clever street art piece from JR .

The French street artist has created a striking optical illusion by covering the pyramid with a gigantic paper photograph of the museum. If viewers stand at the right angle, aligning the image with the building behind it, the pyramid appears to disappear, fading into the museum's faade.

A fan of Pei's, JR was inspired to work with his best-known architectural project. "I was impressed by his willingness to make the pyramid discreet: he wanted it to blend into its environment," the artist told artnet News in an email.