Here is a rosette located near the "Place des Vosges" in Paris. This rosette is exposed in the garden of the "Hôtel Sully". I made a rework for the current contest. Hope you enjoy the effect :)
I'm not sure if it's my nearly-60-year-od-eyes doing yis but as I move my eyes around the center of this image, it appears to bounce toward and away from me. The longer i look at it the more it moves. Now if that's not an optical illusion, then I don't know what is. Wild!
If you've ever wanted to make a difference but found it hard to believe that one person could... check out the Kiva Team Caedes discussion thread and discover that anything is possible.