Qutab Minar, the tallest brick minaret in the world, is an incredible example of early Indo–Islamic architecture. It was built in 1206, but the reason remains a mystery. Some believe that it was made to signify victory and the beginning of Muslim rule in India, while others say it was used to call the faithful to prayer. The tower has five distinct stories, and is covered with intricate carvings and verses from the holy Quran. There are also a number of other historic monuments on the site.