The Giza Pyramids, built to endure and eternity, have done just that. The monumental tombs are part of Egypt’s ‘Old Kingdom’ era and were constructed over 4,500 years ago. The three pyramids and the Sphinx are probably the most iconic images of the ancient world. Pharaoh Kufu began the first Giza pyramid project in around 2550 B.C. His Great Pyramid is the largest in Giza and towers 147 meters over the ground. Its estimated that 2.3 each weigh an average of 2.5 to 15 tones. Khufu’s son, Pharaoh Khafre, built the second pyramid at Giza, around 2520 B.C. He also built the Sphinx, a limestone with the body of a lion and the head of a Pharaoh. The Sphinx may stand as a guard or soldier to stand and keep watch for the Pharaoh’s entire tomb. The third of the Pyramids of Giza, built by Pharaoh Menkaure in 2490 B.C., is considerably smaller than the other two and it features a much more complex temple. Each massive pyramid is only one part of a massive complex, including a palace, temples, solar boat pits, and other features.