Thoth, The Atlantean Built them.

Ref: [link to www.think-aboutit.com]

(quote)
Built I the Great Pyramid, patterned after the pyramid of earth force, burning eternally so that it, too, might remain through the ages. In it, I built my knowledge of "Magic-Science" so that it might be here when again I return from Amenti. Aye, while I sleep in the Halls of Amenti, my Soul roaming free will incarnate, dwell among men in this form or another. (Hermes, thrice-born.)

I would rather believe this then aliens.

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