"Impossible Corners uses three peel-and-stick panels-aligned precisely in the corner of a room-to flip your sense of depth. Designed with carefully calculated visual cues, the decals trick the brain into seeing the corner as protruding outward, not receding.

This illusion works because your mind trusts the perspective cues it sees. Even when you know how it's done, the effect remains strangely convincing-especially as you move. Thanks to a principle called Gestalt closure, your brain fills in missing information to create a seamless, but entirely false, reality.

Your perception can hold the ordinary room—or the illusion—but not both at once."