45 Mind-Boggling Photos That Look Like Optical Illusion

When it comes to seeing things we have never seen before, it can be hard for our brains to identify what we’re looking at. We are used to seeing the same thing over and over again, so when we see a variation of something it doesn’t make any sense.

Seeing something like this is extremely cool, and extremely confusing. Where did this door come from? How can it be standing there alone, how is it supported? There are too many questions. But apparently, this is the entrance to the Underwater Observatory in Zug, Switzerland.