The Qutb Minar complex are monuments and buildings from the Delhi Sultanate at Mehrauli in Delhi, India.https://ignca.gov.in/Asi_data/84996.pdfASI report 1871. Construction of the Qutub Minar "victory tower" in the complex, named after the religious figure Sufi Saint Khwaja Qutbuddin Bakhtiar Kaki, was begun by Qutb-ud-din Aibak, who later became the first Sultan of Delhi of the Mamluk dynasty (Gulam Vansh). It was continued by his successor Iltutmish (a.k.a. Altamash), and finally completed much later by Firoz Shah Tughlaq, a Sultan of Delhi from the Tughlaq dynasty (1320–1412) in 1368 AD. The Qubbat-ul-Islam Mosque (Dome of Islam), later corrupted into Quwwat-ul Islam, stands next to the Qutb Minar.Epigraphia Indo Moslemica, 1911–12, p. 13. The Qutub Minar also bears numerous inscriptions in Arabic and Nagari characters at various locations, which reveal its history.

Many subsequent rulers, including the Tughlaqs, Alauddin Khalji and the British added structures to the complex.Page, J. A. (1926) "An Historical Memoir on the Qutb, Delhi" Memoirs of the Archaeological Society of India 22: OCLC 5433409; republished (1970) Lakshmi Book Store, New Delhi, OCLC 202340 Apart from the Qutb Minar and the Quwwat ul-Islam Mosque, other structures in the complex include the Alai Darwaza gate, the Alai Minar and the Iron pillar. Inside the complex lie the tombs of Iltutmish, Alauddin Khalji and Imam Zamin.Qutub Minar; Qutub Minar Government of India website.

Today, the adjoining area spread over with a host of old monuments, including Balban's tomb, has been developed by the Archaeological Survey of India (ASI) as the Mehrauli Archaeological Park, and INTACH has restored some 40 monuments in the Park.. It is also the venue of the annual 'Qutub Festival', held in November–December, where artists, musicians and dancers perform over three days.

Alai Darwaza

The Alai Darwaza is a main gateway from the southern side of the Qutub.QutubMinarDelhi.com. "" . Retrieved 5 August 2015. It was built by the second Khalji, Sultan of Delhi, Ala-ud-din Khalji in 1311 AD, who also added a court to the pillared hall to the eastern side, it was to serve as one of four grand gates for his vast expansion to the Quwwat-ul-Islam mosque.. The domed gateway is decorated with red stone and inlaid white marble decorations, inscriptions in Naskh script, latticed stone screens, and showcases the remarkable craftsmanship of the Turkish artisans who worked on it. This is the first building in India to employ Islamic architecture principles in its construction and ornamentation.

The Slave dynasty did not employ true Islamic architecture styles and used false domes and false arches. This makes the Alai Darwaza, the earliest example of first true arches and true domes in India.World Heritage Sites – Humayun's Tomb: Characteristics of Indo-Islamic architecture Archaeological Survey of India (ASI). However, the unusually thick walls and shallow dome indicate that the builders had not yet mastered constructing domes. It is considered to be one of the most important buildings built in the Delhi sultanate period. With its pointed arches and spearhead of fringes, identified as lotus buds, it adds grace to the Quwwat-ul-Islam mosque to which it served as an entrance.

Qutb Minar

The Qutb Minar is inspired by the Minaret of Jam in Afghanistan, it is an important example of early Afghan architecture, which later evolved into Indo-Islamic Architecture. The Qutb Minar is 72.5 metres (239 ft) high, making it the tallest minaret in the world built of bricks. It has five distinct storeys, each marked by a projecting balcony carried on muqarnas corbel and tapers from a diameter 14.3 metres at the base to 2.7 metres at the top, which is 379 steps away. It is listed as a UNESCO World Heritage Site along with surrounding buildings and monuments.QutubMinarDelhi.com. "Qutub Minar" . Retrieved 5 August 2015.

Built as a Victory Tower, to celebrate the victory of Muhammad Ghori over the Rajput king, Prithviraj Chauhan, in 1192 AD, by his then viceroy, Qutb-ud-din Aibak, later the first Sultan of Mamluk dynasty. Its construction also marked the beginning of Muslim rule in India. It was built using red sandstone and marble. Inscriptions record that 27 Hindu and Jain temples were torn down and used for its creation. Even today the Qutb remains one of the most important "Towers of Victory" in the Islamic world. Aibak however, could only build the first storey, for this reason the lower storey is replete with eulogies to Muhammad Ghori. The next three floors were added by his son-in-law and successor, Iltutmish. The minar was first struck by lightning in 1368 AD, which knocked off its top storey, after that it was replaced by the existing two floors by Firoz Shah Tughlaq, a later Sultan of Delhi from 1351 to 1388, and faced with white marble and sandstone enhancing the distinctive variegated look of the minar, as seen in lower three storeys. Thus the structure displays a marked variation in architectural styles from Aibak to that of Tughlaq dynasty. The inside has intricate carvings of the verses from the Quran.

The minar made with numerous superimposed flanged and cylindrical shafts in the interior, and fluted columns on the exterior, which have a 40 cm thick veneer of red and buff coloured sandstone; all surrounded by bands of intricate carving in Kufic style of Islamic calligraphy, giving the minar the appearance of bundled reeds. It stands just outside the Quwwatul mosque, and an Arabic inscription suggests that it might have been built to serve as a place for the muezzin, to call the faithfuls for namaz.Delhi city guide, by Eicher Goodearth Limited, Delhi Tourism. Published by Eicher Goodearth Limited, 1998. . Page 181-182.Plaque at Qutub Minar Also marking a progression in era, is the appearance of inscriptions in a bold and cursive Thuluth script of calligraphy on the Qutb Minar, distinguished by strokes that thicken on the top, as compared to Kufic in earlier part of the construction.

Inscriptions also indicate further repairs by Sultan Sikander Lodi in 1503, when it was struck by lightning once again. In 1802, the cupola on the top was thrown down and the whole pillar was damaged by an earthquake. It was repaired by Major R. Smith of the Royal Engineers who restored the Qutub Minar in 1823 replacing the cupola with a Bengali-style chhatri which was later removed by Governor General, Lord Hardinge in 1848, as it looked out of place, and now stands in the outer lawns of the complex, popularly known as Smith's Folly.

After an accident involving school children, entry to the Qutub Minar is closed to public since 1981, while Qutub archaeological area remains open for public. In 2004, Seismic monitors were installed on the minar, which revealed in 2005 Delhi earthquake, no damage or substantial record of shakes. The reason for this has been cited as the use of lime mortar and rubble masonry which absorbs the tremors; it is also built on rocky soil, which further protects it during earthquakes.

Quwwat-ul-Islam Mosque

The Quwwat-ul-Islam () mosque, also known as the Qutub Mosque or the Great Mosque of Delhi, was commissioned by Qutb-ud-din Aibak, founder of the Mamluk or Slave dynasty and built using spolia from 27 temples.Southern Central Asia, A.H. Dani, History of Civilizations of Central Asia, Vol.4, Part 2, Ed. Clifford Edmund Bosworth, M.S.Asimov, (Motilal Banarsidass, 2000), 568. It was built near the site of a pre-demolished large temple located in the centre of a citadel.

It was the first mosque built in Delhi after the Islamic conquest of India and the oldest surviving example of Ghurids architecture in Indian subcontinent. The construction of this Jami Masjid (congregational mosque), started in the year 1193 AD, when Aibak was the commander of Muhammad Ghori's garrison that occupied Delhi. To leave the imprint of his religion to the new territory, Aibak decided to erect a mosque epitomising the might of Islam and chose his site, the heart of the captured Rajput citadel of Qila Rai Pithora. The Qutub Minar was built simultaneously with the mosque but appears to be a stand-alone structure, built as the 'Minar of Jami Masjid', for the muezzin to perform adhan, call for prayer, and also as a qutub, an Axis or Pole of Islam. It is reminiscent in style and design of the Adhai-din-ka Jhonpra or Ajmer mosque at Ajmer, Rajasthan, also built by Aibak during the same time, also constructed by demolishing earlier temples and a Sanskrit school, at the site.Adhai-din-ka Jhonpra Mosque archnet.org.

Of the site selected by Aibak for the construction of a mosque, Ibn Battuta, the 14th century Arab traveller, says, before the taking of Delhi it had been a Hindu temple, which the Hindus called elbut-khana, but after that event it was used as a mosque'. Archaeological Survey of India states that the mosque was raised over the remains of a temple and, in addition, it was also constructed from materials taken from other demolished temples, a fact recorded on the main eastern entrance. According to a Persian inscription still on the inner eastern gateway, the mosque was built by the parts taken by destruction of twenty-seven Hindu temples built previously during the reigns of the Tomaras and Prithviraj Chauhan, and leaving certain parts of the temple outside the mosque proper.Maulana Hakim Saiyid Abdul Hai "Hindustan Islami Ahad Mein" (Hindustan under Islamic rule), Eng Trans by Maulana Abdul Hasan Nadwi Historical records compiled by Muslim historian Maulana Hakim Saiyid Abdul Hai attest to the iconoclasm of Qutb-ud-din Aibak. This pattern of iconoclasm was common during his reign.Index_1200-1299: Qutb ud-Din Aibak and the Qubbat ul-Islam mosqueColumbia University Some medieval Muslim historians and travellers often ascribed the construction of the complex to Mamluk Sultan Iltutmish, rather than to Qutb ud-Din Aibak as is commonly accepted. Ibn Batuta also states that near the eastern gate of the mosque were two very big idols of copper connected together by stones. Every one who left the mosque treaded over them.

The mosque is one of the earliest extant mosques in India. The original dimensions of the mosque had a courtyard measuring by . The prayer hall, located on the west measures by . The mosque has grey colonnades made of greystone with three bays in east and two bays deep on the north and the south. Extensions were made to the mosque during 1296 when its dimensions in north and south were extended by . The famous iron pillar is located on the stone pavement in front of it, while Qutub Minar is located west of the main entrance. The central arch of the mosque is ogee in shape and is wide and tall. The side arches are smaller in size. The screen is sculpted with religious texts and floral patterns. Desai believes that the mosque was not constructed in scientific style but in Corbel style as indicated by the variations in the pattern of the arches.