The pyramids of Egypt were built between 3000 BC and 1800 BC as tombs for pharaohs. They were constructed to represent the primordial mound and rays of the sun. The largest pyramid, the Great Pyramid of Giza, was built for Pharaoh Khufu between 3000 BC and 1800 BC and remains the largest pyramid ever constructed, though Khufu was never actually buried there. Inside the pyramids are chambers for the pharaoh as well as shafts believed to bring air to the chambers and allow the pharaoh's soul to ascend to the afterlife.