Once you’ve seen his art, it’s not hard to recognize the iconic, nostalgic style of the acclaimed Swiss artist known as BustArt. Multiple layers and multiple colors, his signature works range from expansive street art to intricate sculptures, from simple stencils to complex cityscapes. He pioneered what has become known as Graffiti-Pop — a meshing of abstract graffiti with pop-culture icons, especially images from vintage cartoons.