The Qutb Minar, also spelled Qutub Minar and Qutab Minar, is a minaret and victory tower, built during the Delhi sultanate, and comprising the Qutb complex, a UNESCO World Heritage Site in Mehrauli, South Delhi, India. It was mostly built between 1199 and 1220, contains 399 steps, and is one of the most-frequented heritage spots in the city. After defeating Prithviraj Chauhan, the last Hindu ruler of Delhi before the Ghurid conquest of the region, Qutab-ud-din Aibak initiated the construction of the victory tower, but only managed to finish the first level.