A few months ago, Felice Varini had an exhibition at the Gallery Römeraphotheke in Zürich, Switzerland. He created a new piece on-site called “Clin d’oeil à l’angle”. The graphic forms in his installations can only be seen from one exact viewpoint. If you don’t know what I mean: have a look here.
“Clin d’oeil à l’angle” is just a little different than his other pieces, this time you had to look at it in a mirror.