ocr: The Great Pyramid Theroyal tomb ofthe Pharaoh Cheops. Known simply. ras"The Great Pyramid", itist the. largest stone structurein the world. More than twor million blocks ofstone, each weighing approximately 2.5tons were used ini - its construction. Itreportedlytooktwenty years tobuild. Aspectacular monument, itl - has proved tobeless successful as a secure tomb. Thebody and the treasuresitonce held have disappeared. All thatremains insidethe pyramidisthe empty sarcophagus ofthe Pharaoh.