The Pyramids were thought to have been constructed by the Egyptians during the Age of the Pharaohs as history shows they used the pyramids in Egypt.
Truth is Egyptians never built them only reconstructed them to fix the alignment.
Pyramids are actually more than 30,000 years old! That means they were constructed before this Great Age started 25,800 years ago. Now the question is why, why were they built?
I have two links to sites that explain their purpose and who built them. It is said that the pyramids are just as big underground as they are above.
According to a man known as Edwin Veryman, the pyramids were constructed with a method called sonic control. At the most, 37 people had built them. Sonic control was done by a group focused mind of 28 people. He continues on in his page about them saying that under the labyrinths there are cities using sonics.
http://www.sol.co.uk/e/esp/life/The_Truth_Behind_the_Pyram.htmlTests have been done and shown that they contain energy that cannot be found anywhere on Earth, only in the Universe.
One test by Austrian scientist Vern Cameron, used a watermelon that was kept inside a bathroom type wet chamber in the pyramid and had shrunk to the size of a chestnut. The fruit was dry but had a splendid taste.
Another test by Russian scientists used a six inch sapling that was kept inside a glass pyramid. A camera recorded that the plant would move in different directions and appeared to be dancing for minutes in intervals of two hours. Saplings of the same plant kept outside the pyramid had no movement. When the sapling was placed near gold it would bend completely towards it showing, what they believed, human greed. I believe the plant was bending to the frequency of gold known in alchemy, not its material value.
Here is the link with the experiments along with lots of information:
http://www.akhandjyoti.org/?Akhand-Jyoti/2003/Nov-Dec/MysteriesGreatPyramids/I will add more another day as I am going to bed now.