Delhi

Early and Ancient History

Delhi's earliest association is legendary: the Mahabharata identifies the city of Indraprastha, built by the Pandavas, with the site of present-day Delhi, though this remains a textual tradition rather than an archaeologically confirmed identification. Excavations at Purana Qila, in the heart of modern Delhi, have uncovered pottery, including Painted Grey Ware associated elsewhere with the later Vedic period (roughly 1200–600 BCE), suggesting habitation stretching back well over two millennia, alongside continuous occupation layers from the Mauryan period onward. Delhi's location near a natural crossing of the Yamuna, along routes linking the Gangetic plain to the Indus basin and beyond, made it strategically significant well before it became a capital in its own right.

Tomar and Chauhan Delhi

The historically documented city begins to take shape under the Tomara dynasty, traditionally credited with founding a fortified settlement, Lal Kot, around the 11th century; traditional accounts credit the Tomara ruler Anangpal with founding or expanding it around 1052 CE. The Chauhan (Chahamana) dynasty under Prithviraj Chauhan absorbed Tomara territory in the mid-12th century and expanded the fortifications into what became known as Qila Rai Pithora. Prithviraj Chauhan's defeat by the Ghurid ruler Muhammad of Ghor at the Second Battle of Tarain in 1192 ended Rajput control of Delhi and opened the way for Muslim rule in northern India.

The Sultanate Period: The Seven Cities

Delhi under the Delhi Sultanate (1206–1526) and beyond is often described by historians as a sequence of "seven cities," each a distinct fortified settlement built near, but not directly atop, its predecessor: Qila Rai Pithora (Chauhan/early Sultanate), Siri (built by Alauddin Khalji around 1303 as a defense against Mongol raids), Tughlaqabad (built by Ghiyas-ud-din Tughlaq, c. 1321–1325), Jahanpanah (Muhammad bin Tughlaq, enclosing the earlier cities), Firozabad (Firoz Shah Tughlaq, mid-14th century), Purana Qila/Dinpanah (associated with the Mughal emperor Humayun and the Suri ruler Sher Shah Suri, 16th century), and Shahjahanabad (Shah Jahan, 1638–1648), now known as Old Delhi. Qutb-ud-din Aibak, the first Sultan, began construction of the Qutb Minar around 1199 to commemorate the Ghurid conquest; completed under his successor Iltutmish, it remains, at over 70 meters, the tallest brick minaret in the world. Delhi withstood repeated Mongol raids in the late 13th and early 14th centuries but was sacked with heavy loss of life in 1398 by the Central Asian conqueror Timur, during the late, weakened phase of the Tughlaq dynasty.

Mughal Delhi

Although the early Mughals, Babur and Humayun, and later Akbar governed mainly from Agra, Shah Jahan shifted the capital back to Delhi, laying out the walled city of Shahjahanabad between 1638 and 1648, centered on the Red Fort and the Jama Masjid, with the market street Chandni Chowk as its commercial spine. Delhi flourished as a center of Mughal court culture and Indo-Islamic architecture, and of Persian and Urdu literary production — the poet Mirza Ghalib lived and wrote in the city through its later Mughal and early colonial decades — even as Mughal political power declined sharply after Aurangzeb's death in 1707. The city was sacked in turn by the Persian ruler Nadir Shah in 1739 and the Afghan raider Ahmad Shah Durrani in the 1750s–60s. The Maratha Confederacy exercised substantial influence over Delhi's Mughal court through the latter half of the 18th century, until East India Company forces took control of the city in 1803.

1857 and the End of Mughal Delhi

Delhi was a central flashpoint of the 1857 uprising against East India Company rule: mutinying sepoys marched on the city and proclaimed the elderly Mughal emperor Bahadur Shah Zafar, by then a largely ceremonial figure, as their leader. British and allied forces besieged and retook the city later that year, after which Bahadur Shah Zafar was tried and exiled to Rangoon, ending the Mughal dynasty; large parts of the old city were subsequently demolished or repurposed in a punitive reordering of Delhi's urban fabric.

New Delhi and the Modern Capital

The British colonial government, which had ruled from Calcutta, announced the transfer of India's capital to Delhi in 1911, and commissioned architects Edwin Lutyens and Herbert Baker to design a new administrative city, New Delhi, formally inaugurated in 1931. Its wide avenues, government buildings (including what is now Rashtrapati Bhavan and the Secretariat buildings), and the India Gate war memorial were built in a hybrid classical and Indo-Saracenic style. Delhi became the capital of independent India in 1947, absorbing a large influx of refugees from West Punjab during Partition, which substantially reshaped the city's demography and drove major postwar urban expansion. It was formally constituted a National Capital Territory in 1991, with an elected legislative assembly alongside the central government's continued administrative role.

Contemporary Delhi

Delhi today is among the world's most populous urban agglomerations, combining historic quarters — Old Delhi's Mughal-era lanes and monuments alongside New Delhi's colonial-era core — with extensive modern development, and faces significant challenges from air pollution, traffic congestion, and rapid urbanization. Its metro system, opened in 2002, is one of the largest in the world by ridership.