15 facts about the Great Pyramid of Giza

The Great Pyramid a true masterpiece and has rightly earned the title of a “Wonder”. It was built with such precision that our current technology cannot replicate it.  Historical analysis shows that the Pyramids were built between 2589 and 2504 BC. There are so many interesting facts about this Pyramid that it baffles archaeologists, scientists, astronomers and tourists. Here are the facts:

1. The Pyramid of Menkaure, the Pyramid of Khafre and the Great Pyramid of Khufu are precisely aligned with the Constellation of Orion.
2. The mortar used is of an unknown origin as no explanation is given. It has been analyzed and its chemical composition is known but it can’t be reproduced. It is stronger than the stone and still holding up today.
3. The interior temperature is constant and equals the average temperature of the earth, 20 Degrees Celsius .
4. The outer mantle was composed of 144,000 casing stones, all of them highly polished and flat to an accuracy of 1/100th of an inch, about 100 inches thick and weighing approx. 15 tons each.
5. The base of the pyramid covers 55,000 m2 (592,000 ft 2) with each side greater than 20,000 m2 (218,000 ft2) in area.
6. The four faces of the pyramid are slightly concave, the only pyramid to have been built this way.
7. The centers of the four sides are indented with an extraordinary degree of precision forming the only 8 sided pyramid, this effect is not visible from the ground or from a distance
   but only from the air, and then only under the proper lighting conditions. This phenomenon is only detectable from the air at dawn and sunset on the spring and autumn equinoxes, when the sun casts shadows on the pyramid.
8. Center of Land Mass: The Great Pyramid is located at the center of the land mass of the earth. The east/west parallel that crosses the most land and the north/south meridian that crosses the most land intersect in two places on the earth, one in the ocean and the other at the Great Pyramid.
9. With the mantle in place, the Great Pyramid could be seen from the mountains in Israel and probably the moon as well.
10. It is reported that when the pyramid was first broken into that the swivel door, weighing some 20 tons, was so well balanced that it could be opened by pushing out from the inside with only minimal force, but when closed, was so perfect a fit that it could scarcely be detected and there was not enough crack or crevice around the edges to gain a grasp from the outside.
11. The weight of the pyramid is estimated at 5,955,000 tons. Multiplied by 10^8 gives a reasonable estimate of the earth’s mass.
12. The pyramid is estimated to have around 2,300,000 stone blocks that weigh from 2 to 30 tons each and there are even some blocks that weigh over 50 tons.
13. The cornerstone foundations of the pyramid have ball and socket construction capable of dealing with heat expansion and earthquakes.
14. Aligned True North: The Great Pyramid is the most accurately aligned structure in existence and faces true north with only 3/60th of a degree of error. The position of the North Pole moves over time and the pyramid was exactly aligned at one time.
15. The curvature designed into the faces of the pyramid exactly matches the radius of the earth.