What took 20 years to build?

The Great Pyramid of Giza It took around 20 years to finish and became the tallest structure in the world until the building of the Eiffel Tower. The surrounding pyramids create an astonishingly accurate alignment with the stars, making this construction truly unique.



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The short truth is, no one really knows how long the Egyptian Pyramids took to build, because they are so old, and such little evidence survives from the time when they were made. But estimates suggest each pyramid could have taken somewhere between 15-30 years to complete.

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About 2,550 B.C., King Khufu, the second pharaoh of the fourth dynasty, commissioned the building of his tomb at Giza. Some Egyptologists believe it took 10 years just to build the ramp that leads from the Nile valley floor to the pyramid, and 20 years to construct the pyramid itself.

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To build such a pyramid today (using modern technology and equipment such as cranes and helicopters), it would take 1,500 to 2,000 workers around five years, and cost around $5 billion.

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The unknowns of pyramid construction chiefly center on the question of how the blocks were moved up the superstructure. There is no known accurate historical or archaeological evidence that definitively resolves the question.

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It's still unknown exactly how the Egyptian pyramids were constructed, though the ancient Greek historian Herodotus estimated that 100,000 men labored for some 20 years to create the largest, the Great Pyramid, for Khufu.

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In 2014 a small raptor skeleton was uncovered in a small section deep within The Great Pyramid of Giza. The skeleton is presumed to have been unearthed in the building process by the ancient Egyptians and placed into the pyramid due to it being an interesting find (4). All in all the Pyramids were built by people.

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Today, the Giza pyramids wear the tawny tones of their surrounding Libyan Desert. But back in their heyday, they sparkled. Originally, the pyramids were encased in slabs of highly polished white limestone. When the sun struck them, they lit up and shimmered.

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But what the Egyptians lacked in tools, they made up for with science and engineering precision. Smith explains that they developed and used the cubit rod to measure and lay out the dimensions of the pyramid; a square level to level horizontal surfaces, and a 3:4:5 framing square to create precision 90-degree angles.

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The Great Wall is the largest defense work of ancient China and one of the wonders of the world's architectural history. Construction of the Great Wall lasted for more than 2,000 years, from the Spring and Autumn (770-476B.

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3 of the Longest Construction Projects in History
  • STONEHENGE. Location: Wiltshire, England. Construction started: Circa 3500 B.C. ...
  • THE GREAT WALL OF CHINA. Location: From Shanhaiguan to Lop Lake, China. Started: Circa 400 B.C. ...
  • PETRA. Location: Hashemite Kingdom of Jordan, Petra. Construction started: Circa 600 B.C.


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Many people have said that the pyramids would last 1 million years or even until the world ended, but I'd say around 10,000 to 100,000 years based on current observations.

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The construction of the pyramids is not specifically mentioned in the Bible. What we believe about their purpose does not impinge on any biblical doctrine.

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Although it's believed that these structures hold some ancient secrets of the ancient Egyptian pharaohs, scientists have not been able to discover much. There are still questions left unanswered, and we are still waiting to know more. Also, there are interesting facts about these ancient marvels that you need to know.

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Considering the pyramids were built more than four thousand years ago, the exact technique of construction remains a mystery and modern-day equipment was not available at the time. It is believed that ancient Egyptians ferried the huge stone blocks on the Nile river.

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As part of the international research team “ScanPyramids” the Munich scientists have proven the existence of an empty chamber which was until now only posited based on measurement data. The hollow space is located above the original entrance to the pyramid, which is not accessible to the public.

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Elephants were never common in Egypt like they are in India today, so they were never part of the construction. It is the case that cows were used and we do have evidence of that, but in moving something as big as the obelisk it was most probably people power.

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