How can something that’s there not be there? Well, as I’m sure you’ve figured it out already, it’s an optical illusion. These ones are the same too:
Here are some pictures of the same images, from different angles:
These designs were created by Felice Varini, a Swiss artist. His works appear to be three-dimensional from one angle, however, but are in fact well-placed and well-manipulated flat graphics painted onto flat surfaces. According to mathematics professor and art critic Joël Koskas, “A work of Varini is an anti-Mona Lisa.”