I like the initial post suggesting that the current understanding of the Great Sphinx may be fascinating. At one time it pointed toward Leo but because of precession has moved on
When was that? What era? What date & time?
In the course of a year the sphinx would point at each constellation as it appears in a great circle around the planet, which is constantly turning, and orbiting the sun.
At least claims for Stonehenge relate to alignments at particular times of the year, without making such a wide ranging, and demonstrably false claim.