French collective Paper Donut have painted a series of walls with three-dimensional shapes. The first graffiti piece (shown above) is part of an ad campaign for fashion store Sqwear, and the other two visuals (bottom of post) are personal projects.
Photos © Paper Donut Link via Unurth
Nihalani’s Urban Illusions 
Perspective Illusions Painted and Taped by Fanette G. 
3D Insects and Giant Birds: The Graffiti Art of Mantra 
3D Street Art of the Sea by NEVERCREW 
Insanely Good 3D Graffiti by Odeith 
Three-dimensional Graffiti 
Optical Illusions in Neglected Rooms 
Amazing 3D Drawings 
An Anamorphic Medusa Painted Inside a Factory 
Odeith is Back with More Jaw-Dropping Anamorphic Graffiti 
Wolverine Attacks! 
Floating Shapes and Words in Abandoned Buildings 
