I'm part of a group of mural painters called "The Walldogs" an internationally renowned organization of sign and mural artists. Every year The Walldogs organize a festival where hundreds of artists descend upon a village or small town to paint several dozen murals in one 3-5 day festival. The tradition of painting wall advertisements dates back long before today. Evidence of this can be seen as "Ghost Signs" throughout cities of all sizes. These mural painters of old were often called Walldogs.