The Alai Minar at the UNESCO World Heritage site of Qutub Minar complex in Delhi has stood unfinished for over 700 years. What's its story? This video takes you back in history to the time of Alauddin Khilji, the ambitious and ruthless king of Delhi Sultanate who built this tower.  Was Alauddin Khilji really the religious fanatic that he is made out to be?