Symmetry in a space

In this image it is clear to see that symmetry is a main element in this interior image.

The bookcases are both the same at each side they have different items on the shelves but the items are kept consistent with glass and books.

The white couch in the middle is placed directly in the middle of the bookcases with the picture placed directly in the middle with a light at each side of it.

It is clear by looking straight at the image the divide down the middle which shows the symmetry in the space.