#Qutb Minar's Interesting Facts.

Quwwat-ul-Islam house was making Qutb Minar of prayer around 1192 by Qutb-ud-din Aibak, 1st ruler of the Old Delhi land.[4]

The house of prayer complicated is one in all the earliest that survives in
the Indian landmass.[6][7] The tower is known as once Qutb-ud-din Aibak, or Qutbuddin Bakhtiar Kaki, a Sufi saint.[8] Its ground structure was designed over the ruins of the Lal Kot, the
citadel of Dhillika.[9] Aibak's successor Iltutmish added three more storeys.[8] The minar's topmost storey was damaged by lightning in 1369 and was rebuilt by Firuz Shah Tughlaq, who added another storey. In 1505, an earthquake damaged Qutub Minar; it was repaired by Sikander Lodi.
On one Sep 1803, a major earthquake caused serious damage.
Major Henry M. Robert Smith of a people Indian Army restored the tower in 1828 and put in a columned cupola over the fifth story, therefore making a sixth.

The cupola was taken down in 1848, under instructions from The Viscount Hardinge, then Governor General of India. It was reinstalled at ground level to the east of Qutb Minar, where it remains. It is known as "Smith's Folly".[10]