he pyramids of Egypt, dating back to centuries have stood the test time. These huge structures were built of limestone and granite. Blocks of stone weighting up to 15 tones were used. It is said that about a lakh of slaves labored for 20 years to build the Great Pyramid that houses the mummy of Pharaoh Khufu. However, they worked only for three months in a year, when the Nile flooded its banks. Then the granite would be brought from Aswan, floated downstream to a specially built jetty at the site of the Pyramid. The stone would then be dragged up big, long, sloping ramps and fitted into places.
Star factThe largest of the three pyramids of Giza in Egypt is the Great Pyramid that houses the mummy of Pharaoh Khufu or Cheops. It is considered to be the only one of the ancient seven wonders of the word that still exists.
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