Built around 2550 BC, when Pharaoh Khufu was the Pharaoh of Egypt, the Great Pyramid ranks as the world’s largest and biggest cultural structure. According to scientific research that has been carried out over the years, it took 20,000 people 20 years to build the Great Pyramid.
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The feat of building a pyramid as great as this in the manner described above might seem unbelievable. However, this is because we are considering it from the perspective of a more advanced time. Building the Pyramid is very possible for ancient Egyptians, only that it will take as long as it did because they were using bricks and woods.