What is this Sphinx and what does it represent and who built it and out of what?

The Great Sphinx of Giza is a monumental limestone statue with the body of a lion and the head of a pharaoh, believed to represent the Pharaoh Khafre. It was constructed during the reign of Khafre around 2500 BC in ancient Egypt, serving as a guardian for the Giza Plateau and the nearby pyramids. The Sphinx symbolizes strength, wisdom, and protection, embodying the fusion of human and animal characteristics in ancient Egyptian art and culture.