THE GREAT PYRAMID OF KHUFU (CHEOPS)

The furthest one of the 3 is the Great Pyramid.  The middle one looks larger because it was built on a higher ground.  It's 756 feet long on each side, 450 high and is composed of 2,300,000 blocks of stone, each averaging 2 1/2 tons in weight. Despite the makers' limited surveying tools no side is more than 8 inches different in length than another, and the whole structure is perfectly oriented to the points of the compass. Until the 19th century it was the tallest building in the world and, at the age of 4,500 years, it is the only one of the famous "Seven Wonders of the Ancient World" that still stands. It is the Great Pyramid of Khufu, at Giza, Egypt.  It was as a tomb for the Pharaoh Khufu (whom the Greeks referred to as Cheops).