Abandoned buildings can be transformed by a few sprays of paint.  The makeshift canvas, tagged by its author reveals a beautiful mural to the world…..until it is painted over and a mundane white wall restored; awaiting the process to begin again. Such is the transient nature of graffiti. But it doesn’t have to be so.  “Banksy came from the streets and now… More The nature of street art: spontaneous, public and mostly fleeting.