Like the endless staircase, these twelve musical notes seem to go up or down forever. Pass your mouse over the dots one at a time in both directions. Listen ...

I stop looking...but my eyes keep on going! What keeps our eyes going after we stop looking is something called an after image. After images work because ...

This multicolored cube has a built-in industrial strength contrast illusion, and the effect is mind numbing. The brown square in the center top, and the ...

Our favorite games. We have some great games for you. They all require a Java-enabled browser to operate, or a Flash plugin. The plugins are free. ...

Stare at this figure until a white subjective triangle appears. Can you see it? It is partially covering three circles. The circles look like PACMAN shapes ...

was built by Mark Newbold and is named after its inventor, Jerry Andrus. It is said that Socrates discovered this effect while staring at a waterfall ...

Here are some illusions that you can perform and experience with "nothing up your sleeve but dirty elbows," as the magician says. No props are needed, and you ...

Mirage comes from the French word mirer, to look at; or se mirer, to be reflected. The phenomena includes the appearance of lakes in arid deserts and hot ...

The 44th President is no llusion! But this illusion is a great one. Look at these 2 upside down images of Barack Obama. Do you see anything wrong? Use the ...

This design will generate apparent motion even though it isn't moving at all. The motion is anticlockwise. Keep your eyes moving when you look at the ...

If I be I be, and you be you be, who be he be? — Word Riddle "A little nonsense now and then, is relished by the wisest men." —Gene Wilder from Willy-Wonka ...

Vanitas Vanitatum, Omnia Vanitas A biblical phrase was the inspiration for Charles Gilbert's allegorical and ambiguous illusion. The phrase translates as; ...