Erm, sorry to break out to you, friend, but you're wrong on this one. Not about the Orion theory - it doesn't hang together for the same reason you're wrong about other sites.

In ancient Egypt they did align certain buildings to certain constellations. But by align I mostly mean they made it so you could see certain stars or constellations through an opening, a window, a hole in the ceiling, etc. It's part of the way they kept time and also because the buildings usually had a connection to a celestial body relating to the spiritual purpose.

In Egypt, the civilization lasted so long that they had to shift some temples, foundation and all, to re-align with the correct stars as precession moved them after a couple thousand years. This is a known fact. Ask any archaeoastronomer.

Thing is, the Orion theory of the stars on the belt aligning really only works if one messes with how a human would look at the stars. The pictures in the book are weird.

Other ancient civilizations also did the constellation alignment thing as well as aligning to solstice or equinox sunrises/sunsets, and also tracking Venus.

Archaeoastronomy exists... It is well known the use of architechtonic edifications to mark positions in sky and time, like the "group E" in Mayan sites.