The orientation of about 500 ancient pyramids and temples randomly spread around the world appears to correlate for 99.99987% with the temperature changes during the last glaciation cycles. Most ancient structures are therefore hundreds of thousands of years old and not just a few thousand. Many of the pyramids and temples have been renovated on top of older foundations, while the orientation of these foundations remained unchanged. Chichen Itza and Baalbek are two good examples of this practice. The proof is mathematically backed-up from start to finish.
No, it's no pseudo science, it's real science but outside of the mainstream channels and therefore not supported not funded by the scientific community.
You can find the research here: https://mariobuildreps.com