Ames Room Illusion

I was roaming my Facebook feed today when all of my friends began sharing a video. The video was of the Ames Room illusion. This illusion warps a persons perception of a room, without making it look visibly different than normal. At one end the room, a person appears to be extremely short, and as they walk to the opposite side, they grow tall enough to barely fit below the ceiling. The way the room is set up, does not make it look any different to the human eye. But the structure of the room on the outside, is almost as if everything is on an angle. This then tricks us into thinking that the person, rather than the room, is growing in size. Ames Room (if you click this link, it will bring you to a YouTube video demonstrating this phenomena)