Amogh N P
 In loving memory of Amogh N P — Architect · Designer · Visionary 
The Qutb Minar, Delhi — a fluted red-sandstone victory tower begun by Aibak and completed by Iltutmish, bands of Quranic calligraphy circling each storey.
Unit IHistory of Architecture - II

Introduction to Islamic Architecture

The arch, the dome and the minaret arrive in India — and meet the temple-builder's chisel.

≈ 35 min + study task

When the armies of the Delhi Sultanate arrived at the end of the twelfth century, they brought a wholly different way of building — one that spanned space with the true arch and dome, gathered worshippers in a courtyard mosque, and decorated with the written word and pure geometry rather than the figures of the temple. Yet the hands that raised these buildings were Indian. The story of this unit is that meeting: an imported form, executed by the temple-builder's chisel, slowly learning a new structural language.

Learning objectives

By the end of this lesson, you will be able to — mapped to the course outcomes for History of Architecture II:

1
CO1 · Understand

Describe the defining elements of Islamic architecture — the arch, dome, minaret, mihrab and the courtyard-mosque plan.

2
CO1 · Understand

Explain why ornament turned to calligraphy, arabesque and geometry, and how Hindu craftsmen executed Islamic forms.

3
CO1 · Analyse

Trace the move from corbelled (false) to true arcuate construction across the early Sultanate.

4
CO6 · Apply

Distinguish the building character of the Slave, Khilji, Tughlaq and Lodi dynasties.

The elements

The vocabulary of Islamic architecture

Every congregational mosque shares the same parts: an open courtyard (sahn) fronting a covered prayer hall (liwan) on the Mecca-facing (qibla) side, with a niche (mihrab) and pulpit (mimbar), and towers (minarets) for the call to prayer.[2, 4] Hold this plan — it underlies every mosque in this course and the next.

The courtyard mosque in plan Sahn — open courtyard ablution tank Liwan — prayer hall mihrab (qibla) minaret entrance
DiagramPlan of a courtyard mosque labelling the sahn courtyard, the liwan prayer hall of many columns, the qibla wall with its mihrab niche, a corner minaret and the entrance

Sahn, liwan and qibla

The congregational mosque is organised around an open courtyard (sahn) fronting a covered prayer hall (liwan) on the Mecca-facing (qibla) side. In the qibla wall a niche, the mihrab, marks the direction of prayer; beside it stands the stepped pulpit, the mimbar. Towers (minarets) carry the call to prayer.[2, 4]

The big idea

Corbel to true arch — the structural story

India built by post-and-lintel (trabeate) and spanned openings with the corbelled “false” arch — courses stepped inward until they meet. Islam built by the true arch — wedge-shaped voussoirs locked by a keystone, working in pure compression. The early Sultanate screens are corbelled; the true arch arrives at Balban's tomb and reaches confident maturity at the Alai Darwaza in 1311.[3, 1] This single shift is the thread through every building below.

Two ways to span an opening Corbel (false) arch capstone courses stepped inward — bends, no true thrust True arch keystone wedge voussoirs — pure compression, spans wide
DiagramComparison of a corbelled false arch, made of horizontal courses stepped inward to a capstone, with a true arch of wedge voussoirs radiating to a central keystone
Slave to Lodi

The Delhi Sultanate, dynasty by dynasty

Read the Sultanate as a sequence of moods: the experimental, spolia-rich Slave dynasty (the Quwwat-ul-Islam mosque, the Qutb Minar); the Khilji mastery of the true arch (the Alai Darwaza); the austere, fortress-like Tughlaqs with their battered walls; and the Sayyid–Lodi age of the freestanding garden tomb.[3, 4]

The Delhi Sultanate — five dynasties Slave 1206 · Qutb Minar Khilji 1290 · Alai Darwaza Tughlaq 1320 · battered walls Sayyid 1414 · tombs Lodi 1451–1526 · garden tomb From corbelled screens to the true arch and the double dome
DiagramTimeline of the five Delhi Sultanate dynasties from 1206 to 1526 with a signature monument marked for each

Slave dynasty — the experiment (1206–90)

Transitional and spolia-rich. The Quwwat-ul-Islam Mosque (begun c. 1192) reused temple columns behind a great corbelled arched screen; Qutb-ud-din Aibak began the Qutb Minar, finished by Iltutmish. Arches here are decorative, not yet structural; Balban's tomb (c. 1287) is credited with India's first true arch.[3, 5]

The great corbelled arched screen of the Quwwat-ul-Islam Mosque in the Qutb complex, raised over reused temple columns.
PhotoThe great corbelled arched screen of the Quwwat-ul-Islam Mosque in the Qutb complex, raised over reused temple columns.Smitapp · CC BY-SA 4.0 · via Wikimedia Commons
The Alai Darwaza (1311) — the first true arch and dome on Islamic principles in India, in red sandstone and white marble.
PhotoThe Alai Darwaza (1311) — the first true arch and dome on Islamic principles in India, in red sandstone and white marble.Ronakshah1990 · CC BY-SA 4.0 · via Wikimedia Commons
At a glance

Indigenous vs Islamic, and dynasty vs dynasty

AspectIslamic / KhiljiIndigenous / Tughlaq
Spanning methodTrue arch (voussoirs) and true domeBeam/lintel; corbelled 'false' arch
Load behaviourCompressionBending in lintels
OrnamentCalligraphy, arabesque, geometry — no figuresFigural sculpture, deities
Mood (Slave/Khilji vs Tughlaq)Ornamented, experimental, vertical wallsAustere, fortress-like, sloping (battered) walls
SignatureQutb Minar, Alai DarwazaTughlaqabad, Ghiyath al-Din's tomb
The Tomb of Sikandar Lodi in its walled garden enclosure, Lodhi Gardens — the octagonal 'royal' tomb type.
PhotoThe Tomb of Sikandar Lodi in its walled garden enclosure, Lodhi Gardens — the octagonal 'royal' tomb type.Slyronit · CC BY-SA 4.0 · via Wikimedia Commons
Vocabulary

Key terms

Mihrab

Niche in the qibla wall pointing to Mecca.

Mimbar

Stepped pulpit beside the mihrab for the sermon.

Sahn / liwan

The open courtyard (sahn) and covered prayer hall (liwan) of a mosque.

Squinch / pendentive

A corner arch (squinch) or curved triangle (pendentive) that seats a round dome on a square room.

Voussoir / keystone

The wedge-shaped stones of a true arch, locked by the central keystone.

Trabeate vs arcuate

Indigenous post-and-lintel building vs Islamic arch-and-vault construction.

Jali

Pierced stone lattice screen of geometric or arabesque pattern.

Spolia

Reused carved members salvaged from earlier (here, temple) buildings.

Apply it

Study task

Draw, side by side, a corbelled arch and a true arch, labelling the courses, the voussoirs and the keystone. Then in two lines explain why the Alai Darwaza marks a turning point that the Quwwat-ul-Islam screen does not.

Check your understanding

Self-assessment

1. The first true (arcuate) dome built on Islamic principles in India is generally credited to the —

2. Tughlaq architecture is best recognised by its —

3. The Qutb Minar was —

In a nutshell

Recap

Islamic architecture is arcuate — the true arch, vault and dome — with the courtyard mosque (sahn, liwan, qibla, mihrab) and minaret, and ornament of calligraphy, arabesque and geometry.
It entered India c. 1192 using spolia and local craftsmen; early Sultanate arches (Quwwat-ul-Islam) are corbelled, the true arch arriving at Balban's tomb and maturing at the Alai Darwaza (1311).
The dynasties read as a sequence of moods: Slave/Khilji ornamented and experimental, Tughlaq austere and fortress-like, Sayyid–Lodi the age of the garden tomb and the first double dome.
Hold the structural story — corbel to true arch — as the thread that runs through every early Indo-Islamic building.
The evidence

References & further reading

  1. [1]Banister Fletcher, A History of Architecture (20th ed.). Oxford: Architectural Press / RIBA, 1996.
  2. [2]Francis D.K. Ching, Mark Jarzombek & Vikramaditya Prakash, A Global History of Architecture. Hoboken: John Wiley & Sons, 2007.
  3. [3]Percy Brown, Indian Architecture (Islamic Period). Bombay: D.B. Taraporevala Sons, 1942.
  4. [4]Satish Grover, Islamic Architecture in India (2nd ed.). New Delhi: CBS Publishers, 1996.
  5. [5]UNESCO World Heritage Centre — Qutb Minar and its Monuments, Delhi (inscribed 1993). https://whc.unesco.org/en/list/233

Further reading

  • Percy Brown, Indian Architecture (Islamic Period) — the standard reference for this unit.
  • Satish Grover, Islamic Architecture in India.
  • Catherine B. Asher, Architecture of Mughal India (New Cambridge History of India). Cambridge University Press, 1992.

Sources gathered and fact-checked June 2026. Published values vary by source, sample and method — treat as indicative and confirm against the cited standard before structural use.