Murales

According to Wikipedia, a Mural is any piece of artwork painted or applied directly on a wall, ceiling or other large permanent surface.
In Mexico, there were 3 called the greatest muralists, Diego Rivera, Jose Clemente Orozco, and David Alfaro Siqueiros.
In Guadalajara, there were some of the greatest murales from Orozco in Palacio de Gobierno and Hospicio Cabanas.