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The Great Pyramid is a massive ancient Egyptian pyramid located in Giza, Egypt. It is the largest of the three pyramids in the Giza pyramid complex and was built as a tomb for the Pharaoh Khufu. The Great Pyramid is one of the Seven Wonders of the Ancient World and is renowned for its impressive size and precise construction. It is made up of millions of limestone blocks, each weighing several tons, and was originally covered in smooth white Tura limestone casing stones. The Great Pyramid stands at a height of 138.8 meters (455 feet) and was the tallest man-made structure in the world for over 3,800 years.