1 The floating tree
2 Body paint illusion: there are five people on this photo posing as a tropical frog
3 Stare at the colored dots on the girl’s nose for 30 seconds. Then look at a white surface and start blinking.
4 The hidden image
5 "No" means "Yes".
6 It's not a parrot! Look closely!
7 Cover the middle with a finger and you'll see that the two grey blocks are the same colour.
8 Look at the cross. How do the celebrities look?
9 All of these dots are white, but some appear to be black.
10 Mess with your eyes