The document discusses the construction of pyramids in ancient Egypt. It describes how the pyramids were built as tombs for pharaohs over 4,000 years ago. Workers transported heavy stone blocks from quarries along the Nile River using sleds pulled by animals or boats. The pyramids were precisely constructed with structures like walls, burial chambers and temples. The largest pyramid was the Great Pyramid of Giza built for the pharaoh Khufu, standing at 482 feet tall. The Bent Pyramid has an unusual shape that changes angles during construction. The Great Sphinx statue also guards the Giza plateau.