- Robert Pless web page
- Artist Patrick Hughes's web page
- Felice Varini's Illusory Paintings on Landscapes
- http://www.termespheres.com
- Pavement Paintings by Julian Beever
- Al Seckel's Homepage of Illusions, Perception & Cognitive Science
- Michael Bach: Optical Illusions & Visual Phenomena
- Peter Thompson: www.viperlib.com - Cool Illusions