Interesting facts. The 2.4 million stone blocks used for the construction of the Great Pyramid at Giza weigh an average of 2.5 tons each. Built around 2560 BC, this pyramid was (at 481 feet) the tallest man-made structure in the world for almost 4000 years until Lincoln Cathedral was finished in 1311 AD. It contains “more masonry than all the medieval cathedrals, churches and chapels built in Europe added together” (Wilson, 1996, p. 6).

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