Although there are plenty of theories, no one really knows who built the Giza Pyramids or carved the Sphinx, or when they were constructed. Any statement as to who built them, or when they were built, is pure theory. In light of all the various theories concerning these mysterious structures, I don’t think the theoretical nature of the pyramid builders can be emphasized enough.
What stands out at Giza more than anything else is not only the magnitude of the construction of the pyramids, but the internal design of the Great Pyramid; three chambers, of which one is subterranean, and their connecting passageways. The passageway that leads to the so-called King’s Chamber rises to a height of thirty-six feet! On the other hand, all other passageways were not built tall enough to accommodate the average man or woman.
There is also the unique configuration of the King’s Chamber as well as the Queen’s Chamber. Both of these contain two shafts, one on each side of the chamber. The Queen’s Chamber contains a corbelled niche built into its east wall, and the King’s Chamber’s ceiling is composed of five granite slabs stacked one atop the other. Why these chambers were constructed in this manner is unknown.