Keep a look out for the signature grinning yellow cat. You’ll now find it all on buildings all over Europe (particularly Paris). The phenomenon is the subject of French filmmaker Chris Marker’s 2004 documentary, Chats Perchés (The Case of the Grinning Cat). In 2002, the yellow cat started popping up all over Paris, so Director Chris Marker filmed his search for more information on the infamous “Monsieur Chat” against the backdrop of international news such as the Iraq war.

See more of “Monsieur Chat” at the Monsieur Chat Flickr Pool.