Qutub Minar should be called Mehrauli Tower of Varah Mehir Stambh

I took my visiting Swiss friend for Delhi sightseeing, three days ago. Our first halt was Qutub Minar, Mehrauli (that got its name from Hindu astronomer Varah Mehir, thus Mehrauli). BTW, Varah Mehir and Aryabhatt(first Indian sattelite in space was named after him) were contemporaries.
Back to Mehrauli, as I have often mentioned, like many other buildings and complexes, Qutub minar complex was NOT built by the slave Commander of Mohd. Gori, Qutub-ud-deen Aibak (he lived in India for just less than 4 years out of which, two years of his time was spent in Lahore). It was a Vishnu Temple complex and Hindu Astronomical observatory having 27 pillared corridors (that we still see spread across the complex, for no Islamic reason at all) and temples. The 27 temples and corridors represented 27 ‘Nakshatras’(rlunar mansion in Hindu astrology)
The Iron Pillar was the ‘Garud Dwaj’(the picture of its top clearly show how the top constituting the image of ‘Garud’ has been torn off).
The Tower itself - I would not call it Qutub anymore, rather Mehrauli Tower-itself was a tower constructed for the purpose of observing stars and constellations.
The pictures I am attaching, taken the day before, do clearly depict how the complex was plundered & destroyed, images defaced, and then converted, by using the very own masonry of thee temples, to construct the first mosque in North India, by the brutal looting invaders, who had neither the emotions or respect for anything in India or Indian.

Since this writing touches Muslims and Islam on many occasions, let me make it clear that it is just aimed at provoking us all to think about our history more objectively. Yes it is written to expose those looting invaders, but not against Islam or Muslims. I am talking about terrorists, not the religion they profess.

I am available to answer any further question on the Mehrauli Tower complex.