This wacky bench plays tricks on your eyes. But it’s not magic, it’s math! Designers in France used geometry to create this illusion. From the side, it looks like a giant chair with a tiny person sitting on it.

But from the front or back, you can see the full length of the bench. That perspective reveals its bent legs, handle-like top, and uneven seat. Those unusual features create the illusion of the chair—when viewed from the correct angle!