How does this architecture look like?
A temple?
No.
It is a mosque. In fact it is one of the oldest mosques
in India, not just in India, but also one of the oldest mosques in the world as well.It is the Kilakkarai Mosque, in Tamil Nadu. It was built in 628–630 AD and was re-constructed in 1036
.Ibn Batutah and Murad, Sultan of Ottoman have visited this mosque.
Incredible!
Edit:
In comments section, people have asked whether it was a temple which was converted to a mosque in an invasion.
No. It wasn't. It was not a Hindu temple before. The mosque was constructed in Dravidian style.
This is Tamil Nadu!
Footnotes