The great Pyramids at Giza in Egypt were built nearly 5,000 years ago as tombs for the Pharaohs. They are VERY BIG. The largest is Kheops, which is 146 meters high and has a square base that is 230 meters on each side. Khephren is 143 meters high with a square base 215 meters on a side. The smallest is Mykerinos, which is 66 meters high and has a base 108 meters on each side.

Legend has it that when Napoleon visited them he calculated that there was enough stone in them to build a wall around France, 3 meters high and 30 centimeters thick. Was he correct?

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