Roberto Orci mentioned that the Egyptian pyramids were a vital plot point in the film. "Although they are commonly described as tombs, no bodies have been found, which looks like they've got something hidden in them..." Transformers: Revenge of the Fallen (2009) - Trivia - IMDb All well and good. But if the Pyramid of Giza hid a machine that would harvest stars, wouldn't the tourists and archaeologists and whoever else that's been around that monument since its genesis have suspected something? A better way to utilize the Pyramid would be in homage to the concept of pyramid power (Pyramid power - Wikipedia, the free encyclopedia, http://wiki.lspace.org/wiki/Pyramid). Devastator excavates a before-unseen pyramid out of the ground, which the Fallen activates with the Matrix to WARP SPACE AND TIME, which is sure to tear apart the Earth. But that would have required a lot of freaky VFX... Anyway it would have been a better way to utilize the Pyramids.