Optical Illusions

Look for a few seconds at the cross in the center of the adjacent image pair.
Now move the mouse over the image and compare the change of the two new halves.
What to observe – Because of the blur on the left you will perceive high contrast, on the right less contrast. This lasts only for a few seconds, then it you see that the 2 halves are actually identical.
Here is the link: http://www.michaelbach.de/ot/lum_contrast-adapt/index.html

Optical Illusions Website

STRANGE TERRACE

http://www.optillusions.com/dp/1-32.htm

-I like this picture because it was interesting to look at and tricked your mind into thinking the terrace was on the ground, when in fact, when you look up, the terrace is looking down. So, it kind of goes both ways.