Sphinxes are mythological creatures that appear in many mythologies. There is e.g. the story of Oedipus and the Sphynx in Greek Mythology. As the Great Sphinx near the pyramids of Gizeh shows, Egyptian Mythology clearly also was familiar with them.
As a symbol, it represents the mysterious, the enigmatic. It is a symbol of power, wisdom, strength, vigilance and royal dignity. It also represents the god of the rising sun.
With the head of a man or a woman, the body of a bull, the feet of a lion and the wings of an eagle, it also represents the four elements and the combination of physical, intellectual, natural and spiritual power.