If you would like to see more great ambigrams check out our John Langdon Gallery.

Here we have three pictures of a bunch of pencils laying on a desk. At first glance they all look the same, but on second viewing you will notice that the lead in the large pencil on the left is different in each picture. So what's the illusion? Well, in one of these pictures the lead in the large pencil is the same size as the lead in all the smaller pencils. Can you tell in which one they are all the same? 

Animated by Optical Spy from an unknown source image

Wonderful illusion by A. Kitaoka

Here we have a lot of black iphones, but if you stare at the center you should see a white iphone.

Here we ask the question which parts of the bridge are the longest, A & C or B & D? This is our take on a famous old illusion called the Jastrow Illusion.

If you keep you eye on one of the balls the other one seems to be all over the place. Then try it with the other ball.

This is a great picture of the atrium in the tallest building in the world, the Burj Dubai. But are we looking up or are we looking down?