Qutub-ud-din Aibak laid the foundation for Qutub Minar in 1199
AD and his successor and son-in-law Shamsu’d-Din- Iitutmish
completed the structure by adding three more stories. Standing at
72.5 meters, it is the highest stone tower in India.
Its base diameter is 14.3 meters and its top diameter is 2.7 meters.
It has 379 steps leading to its top story. The lower three stories are
made using red sand stone and the top two with marble and sand
stone.
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