Mandala is a graphical representation of the center (the Self at Jung). It can appear in dreams and visions or it can be spontaneously created as a work of art. It is present in the cultural and religious representations.
Examples of mandala can be found in all the ancient cultures. We find it in Christianity under the form of frescos with animal images representing apostles and under the form of the zodiac. The astrologic zodiac and its versions are an excellent example of mandala. Also, in the Indian spiritual practices we find fascinating representative cases of mandala, with symbols of the local pantheon.