Is this a cheese of which a small piece is eaten or is it only a small piece of cheese?

Is this A-B-C or 12-13-14?

It is not just a skull.

It looks as if it is moving?

Look at the black spot in the middle, and move your head back and forth.

Look at the center carefully.

Look at the center carefully.

Love of music

Mountains and Horses

Mountains and wolves

Move back and forth while concentrating on the plus sign. (The image is Copyright Archimedes-Lab)

Mystery in the bridge.

No, the squares are not distorted. (The image is Copyright A. Kitaoka)

Notice the letter E.

Parallel lines appears to be curved.

Problematic structure.

Racoons and cats.

Read the sign, and one more time.

Someone is about to go crazy!

Square is distorted, don't you think?