Qutb Minar is a historical monument located in Delhi, India. The Qutb Minar complex is a UNESCO World Heritage Site and is one of the most popular tourist attractions in Delhi. The complex consists of several structures, the most prominent being the Qutb Minar, which is a 73-meter (240 feet) tall minaret made of red sandstone and marble.

The Qutb Minar was built in the 12th century by Qutb-ud-din Aibak, the founder of the Delhi Sultanate, and later extended by his successors. The minaret has five distinct stories, each marked by a projecting balcony. The first three stories are made of red sandstone, while the fourth and fifth stories are made of marble and sandstone.

The complex also includes several other notable structures, including the Quwwat-ul-Islam Mosque, the oldest surviving mosque in Delhi, and the Alai Darwaza, a massive gateway built by the Sultanate ruler Alauddin Khalji. Other structures in the complex include the Iron Pillar, which is a 7-meter (23 feet) tall iron pillar that has stood for over 1,500 years without rusting, and the Tomb of Iltutmish, the second ruler of the Delhi Sultanate.

The Qutb Minar complex is an important symbol of India's rich cultural and architectural heritage, and attracts visitors from all over the world. It is also an important pilgrimage site for Muslims, who come to offer prayers at the mosque and pay their respects at the tomb of Iltutmish.