There has been many theories on who built the Great Sphinx of Giza. Some say Khafre, a man who overthrew the throne of Djedefre, built it, but others say it was built by the father of Khafre. The estimated years it was built was from (2520-2494 BC). We know this from the evidence of their architecture, geology, and archaeology of the Sphinx and its related monuments.
The main purpose of the Great Sphinx of Giza is unknown. Some theories say it was built to symbolically