Was the Sphinx originally built with a lion's head and later remodeled? Dr. Zahi Hawass presents the latest theories and evidence in the mystery of the Sphinx. Egypt is a land filled with hidden treasures, buried secrets, and centuries of old mysteries left unsolved. Perhaps the greatest of these is the Sphinx, no one knows for sure who built it, or when. This Sphinx, a lion with the face of a pharaoh, towers above the Giza Plateau. It is a four-and-half thousand -year old puzzle, but now the latest science is offering new clues.