What is the Great Pyramid of Giza?
The Great Pyramid of Giza, also known as the Pyramid of Khufu or the Pyramid of Cheops, is the second largest pyramid ever constructed, with a height of 146 m (780 ft). Built over a period of 20 years, starting around 2560 BC by a couple hundred thousand slaves and paid workers laboring seasonally, the great Pyramid of Giza is estimated to have a total mass of 5.9 million tonnes. It is composed of an estimated 2.3 million blocks weighing an average of 2.5 tonnes apiece. The largest blocks, which had to be transported down the Nile by boat, weighed 15 tonnes. The Great Pyramid of Giza remained the world’s tallest structure for 3,800 years, until the construction of Lincoln Cathedral in London in 1311.
