This site contains the world’s largest database of visual illusions compiled by cognitive neuroscientist and author Al Seckel. A great deal of the material on this website is unpublished, and the various effects relate to all aspects of vision. Assembled here, you will find several thousand illusion images (classic, modern, graphic, and artistic), as well as illusion demonstrations, animations, diagrams, slides, Microsoft PowerPoint presentations, and artwork (both two dimensional and three-dimensional). This site is not a public access site. It is strictly for commercial and academic use only. All material contained on this site is available for licensing. We will be glad to assist you in your needs and inform you what will best work for your specific needs.

The material on this site can be used for:

- Academic Research
- School Projects
- Classroom Presentations
- Books
- Science and Discovery Museums

Commercial use can be applied to any print or digital medium.

To view our image gallery, click here.  Please keep in mind that in order to protect our galleries, a username and password are required to access them.  In order to request a password, please fill our our Request Access form.  If you are a student in search of information or research on optical illusions, we encourage you to visit our Illusion Bookstore.  These books are excellent resources on the subject and contain useful explanations and other commentary.