Mirrors are considered portals to separate realities. Whether these be the Spirit World, other dimensions, or simply a portal of a new understanding of this dimension, mirrors hold a great deal of importance to many people to show them something they would otherwise not be able to see. In this picture, when the viewer looks down into the mirror, they are shown a new vantage point of a classic French chandelier. From this viewpoint, one can really see that the object is a chandelier, but they may also see it as imitation of different objects such as branches or spiders. Not only does this mirror create a portal to this other "world", but it also distorts reality by showing the three dimensional object as a new flat object.
