In 1978 the Japanese corporation, Nippon attempted to build a 60 foot high pyramid using primitive building techniques (similar to the techniques assumed by mainstream Egyptologists, which I personally do not believe*). They were to build it from one blocks of limestone quarried from the same site used by The Great Pyramid builders quarried. Once built the Japanese were told by Egyptian authorities to dismantle it and return the site to its original state.
From the start they struggled with using old and archaic technology and techniques - even transporting the blocks across the River Nile proved too difficult so eventually they were ferried across by steamboat. Teams of 100 men attempted to move the stones over the ground but failed completely. Once again modern vehicles had to be used to move the stones but once at the site could not be lifted in to place. In the end they used a crane and helicopter to position the blocks.

So how did the Egyptians make the pyramid personally I think there must of been some help from aliens because if the humanity can't successfully make it in the 21st century how did they make it, what do you think? :|