The water tank for the storage of water was built near Qila-I Kuhna by Iltutmish
The wall of the Qila-I-Kuhna masjid in the direction of Mecca Built by Humayun and Sher Shah between 1530 and 1545, it is located inside Purana Qilain Delhi.
Iltutmish was the son-in-law of Qutb al-Din Aibak , the founder of the Mamluk dynasty also known as the slave dynasty.
Qutb al-Din Aibak started the construction of Qutub Minar
which was completed by Iltutmish.
Qutb al-Din Aibak was also called Lakh Baksh. He also built Quwwat-ul-Islam and Adhai Din ka Jhonpra