The Coffer Illusion by Anthony Norcia – Believe it or not, there are 12 circles in this image (and 12 is a hint that will help you see them).
I will understand if you quit looking for now, but if you decide to give up: click here.
Every time you let go of something limiting, you create space for something better.
Stephen C. Paul
I had to give up, but now with the hint, I see circles all over. Doh!
Clever optical illusion!