This infinity mirrors room is achieved by using a flat mirror.

We all know that a plane mirror reflects light onto an object, creating an image of the object above. Each side of the room has a flat mirror covering its entire area, and each mirror is completely parallel to the mirror. The two mirrors mirror each other, causing the mirror to constantly reflect the other’s image, resulting in an endless room. This room use this, put all kinds of lights in the room, the result seems to be a room without end, but in fact it is just a small room, by continuous reflection mirror. in short, no room at the end of a illusion is a cube structure internal planar mirror reflection of the light cast on them as an object, and reflection to another object, create numerous images.