No this picture of a melting building hasn’t been photoshopped, nor is an optical illusion.
This building is located on 39, Avenue George V in Paris. (between the Four Seasons George V Hotel and the Champs-Élysées).
If you go there today, it shouldn’t look anything like this though.
This picture was taken a few years ago, when the building was under heavy renovation and that apparently unsightly scaffolding are unthinkable on Avenue George V. I guess it would have hurt all of the millionaire eyes that roam this street day and night, so this artistic trompe-l’oeil cover was designed to hide the construction works.
I believe that there is a Sony Store there nowadays.