The structure was built by Qutubuddin Aibak. It is the first mosque in India built on Indo-Islamic pattern. It was originally a Jaina temple, then converted into a Vishnu temple).
Adhai din ka Jhopra:
It was built by Qutubuddin Aibak in Ajmer. (Which had been a monastery)?
It was built in the memory of Shaikh Qutub-ud-din Bakhtiyar Kaki by Qutubuddin Aibak. It was completed by lltutmish. Originally it was 4 storied and 225 feet in height. Firuz Tughluq replaced the fourth storey which was damaged by lightening, by adding two smaller storey raising its height to 240 feet.
Tomb of lltutmish:
It is located near Quwwat-ul-lslam Mosque,
lltutmish built it on the grave of his son Nasiruddin Mahmud.
Situated nearQila Rai Pithora.
Alauddin Khilji built it. This door to the Qutub Minar contains a dome which for the first time was built on correct scientific lines.
Built by Alauddin Khilji, it was the second city of Delhi.