Stare at the center of the dot for about 10 - 30 seconds then roll your mouse over it. The object will appear to be in color until you move your eyes (or until they adjust)
http://www.johnsadowski.com/big_spanish_castle.html
Last edited by coolbeans326 on June 14th, 2006, 9:14 pm, edited 1 time in total.
Stare at four small dots in the middle of the picture, and after 30 seconds of looking at them, blink your eyes rapidly. This should reveal an image that looks remarkably like Jesus.