The Great Pyramid of Giza, also called Khufu's Pyramid or the Pyramid of Khufu, and Pyramid of Cheops, is the oldest and largest of the three pyramids in the Giza Necropolis bordering what is now Cairo, Egypt, and is the only remaining member of the Seven Wonders of the Ancient World. It is believed the pyramid was built as a tomb for Fourth dynasty Egyptian pharaoh Khufu (Cheops in Greek) and constructed over a 20 year period concluding around 2560 BC.

Inside the Pyramid

The Great Pyramid is the most comprehensively studied building in the world. It sited at the northern edge of the Giza plateau. It was estimated that 2,300,000 blocks of stone, weighing between 2-70 tons each, were used in its construction, but recent computer calculations estimated the total number of slabs to be 590,712. The mortar used is of an unknown origin. It has been analyzed and it's chemical composition is known but even using today techniques it can't be reproduced.