Heh... the Arc de Triomphe frames the Sun (rise, set, or both) on Napoleon's birthday -- but it also frames it for a week or so on either side of his birthday, hence, not much of a claim to fame there.
On your map, all of the pyramids and most everything else, as well, have sides that are due north, south, east, and west. It must have been their thing back then. The Great Sphinx lies due west of the south wall of the Khafre pyramid. It’s not obvious that this all was done for the reason implied in the article.
The question that I have, though, is how they determined the directions accurately. Using only the sun, that would only be possible on sunset the days of the equinoxes.