Pyramids have always been enveloped by secrecy and mystery. An air of suspense and unknown hangs around the great pyramid.

Though many theories have been developed about the pyramids, there are a still a fewer known facts about it, which have been kept away from the public eye.

Read on to find out.

-The temperature inside The Great Pyramid is at a constant 68 degrees Fahrenheit, which is exactly the same at the earth’s internal temperature.

-The side of the pyramids used to be covered in mantle slabs, 144,000 in all, and would have been visible from the mountains in Israel and the moon.

-It’s the only remaining original "seven wonders of the world".

-The area covered by the Great Pyramid can accommodate St Peter's in Rome, the cathedrals of Florence and Milan, and Westminster and St Paul's in London combined. 

-It has been suggested that there are enough blocks in the three pyramids to build a 3 m (10 ft) high 0.3 m (1 ft) thick wall around France. 

-The great pyramid was built during the reign of Khufu (Cheops in Greek), 2nd king of the fourth dynasty ± 2,720-2,560 BC

-The great pyramids of Egypt now stand a full 3 miles south of the spot where they were originally built. That's how much the earth's surface has shifted in the last 4500 years. 

-The three pyramids of Giza do in fact match the belt of Orion, but they did not when the pyramids were built. It seems that the Egyptians built the pyramids to resemble today's belt of Orion. 

-All of the significant major pyramids were built over a time period of about 200 years. A new one was well underway before the previous one was completed. It amounted to keeping a more or less constant work force busy the year around for the 200 years. 

-The Egyptian Pyramids were not made from cut stone. The blocks were poured in place using crushed, local limestone and a 'geopolymer' - a cement that is better than most known today. The largest was built in 20 years using an estimated 14,000 workers. 

-The biggest Pyramid in the world is not in Egypt. It's actually about sixty miles southeast of Mexico City, Mexico. It covers more than forty acres and the largest Egyptian Pyramid, The Great Pyramid at Giza, covers about 13 acres. 

-The Great Pyramid at Giza in Egypt, constructed around 2500 B.C., was the tallest building in the world until the Eiffel Tower was erected in 1889. 

-More than 14 million sandstone blocks make up the pyramids which were originally covered in limestone. Interestingly, this limestone wasn't stolen but used by the native Egyptians as building material.

 Source: http://daily.bhaskar.com/article/TRA-ten-facts-about-the-great-pyramid-which-will-shock-you-4165911-NOR.html?HF-24=