This complex is a collection of monuments and buildings from the Delhi Sultanate at Mehrauli in Delhi. It embraces the Quwwat-ul-Islam Mosque of Qutbuddin Aibak and the Qutb Minar. Also to be found in the complex are the Tomb of Iltutmish, the Alai Minar, Alai Darwaza and what is believed to be the Tomb of Alauddin Khalji.
The Quwwat-ul-Islam Mosque was begun in 1193. It was the first mosque to be built in Delhi after the Islamic conquest of India and is the oldest surviving example of Ghurids architecture in the Indian subcontinent. The mosque was erected to epitomise the might of Islam and the site chosen was the heart of the captured Rajput citadel of Qila Rai Pithora.
The adjacent Qutb Minar tower is the tallest brick minaret in the world and was inspired by the Minaret of Jam in Afghanistan. It was built as a Victory Tower to celebrate the victory of Muhammad Ghori over the Rajput king, Prithviraj Chauhan in 1192 by Qutb-ud-din Aibak. The tower stands at 72.5m tall with only the first storey being completed by Aibak. The next three stories were completed by his son-in law and successor, Iltutmish.