One of the key features of the Louvre is a large glass pyramid in the courtyard outside. We'll see it in later shots. This one is a homage to that one. It's much smaller but its most notable characteristic is that it is upside down. It serves as a skylight for the underground shopping centre around the entrance to the Louvre Museum. It is named, appropriately enough, the Pyramide Inversée.

Addendum: My personal opinion is that Facebook is a sociopathic organisation that steals other peoples' intellectual property (including the images in this gallery) despite being explicitly denied permission to do so.