The Pyramids, Tharsis Montes (Mars) Orion's Belt

The pyramids of Giza were built to align with the three stars of Orion's Belt. 

As the owner of Orion's Belt, I'd be remissed if I didn't weigh in:

Orions Belt, Pyramids of Giza, Tharsis Montes (Mars)

Most of the stars in both systems are binary, where two or more Suns are all whirling around one another appear as one gigantic ball of plasma.  To properly align with either constellation would require about 5 more pyramids to be built.

Cheap technicality.  I know.  There will be more on this as the site develops, but clearly the key to intent of the framers lies somewhere in between Earth and the stars:

A Good Starting Point Might Be The Three Massive Congruent Objects On The Planet that Cairo was Named After