The building codes should prohibit this practice.  The codes already restrict the color of paint owners may use on their buildings.  So why allow the exception for "art."  Art is what people say it is.  I think Wyland's pictures are garish, cheap looking and ugly! I've seen better looking graffiti painted over.  It's inconceivable that an owner would agree to give an artist and ownership interest in their building in exchange for putting up some weird picture.  Where's the Outdoor Circle?  These things are just billboards for the artists.  No more, please!