We were all taught in school that the Great Pyramid of Giza, Egypt was built to be a tomb for the Pharaohs. However, the details suggests that they were originally built as something far more sophisticated.
Be sure to check out the works of Graham Hancock, Christopher Dunn, Brien Foerster, Stephen Mehler, Dr. Robert Schoch, John Anthony West, Robert Bauval (and many others) for more information on ancient Egypt, and the true history of ancient human civilization.