The city is home to colleges, research institutions and many central and state government offices, including High court of Uttar Pradesh.

[3] It is also mentioned in the Pali canons of Buddhism, such as in section 1.7 of Majjhima Nikaya (c. 500 BCE), wherein the Buddha states that bathing in Payaga (Skt: Prayaga) cannot wash away cruel and evil deeds, rather the virtuous one should be pure in heart and fair in action.

[35] In Tirthayatra Parva, before the great war, the epic states "the one who observes firm [ethical] vows, having bathed at Prayaga during Magha, O best of the Bharatas, becomes spotless and reaches heaven.

These Purana-genre Sanskrit texts describe Prayag as a place "bustling with pilgrims, priests, vendors, beggars, guides" and local citizens busy along the confluence of the rivers (sangam).

It states, In the Samvat year 1632, Saka 1493, in Magha, the 5th of the waning moon, on Monday, Gangadas's son Maharaja Birbal made the auspicious pilgrimage to Tirth Raj Prayag.

[55] In papers published about 1979, John Irwin – a scholar of Indian Art History and Archaeology, concurred with Krishnaswamy and Ghosh that the Allahabad pillar was never moved and was always at the confluence of the rivers Ganges and Yamuna.

[48][49] According to Irwin, an analysis of the minor inscriptions and ancient scribblings on the pillar first observed by Cunningham, also noted by Krishnaswamy and Ghosh, reveals that these included years and months, and the latter "always turns out to be Magha, which also gives it name to the Magh Mela", the Prayaga bathing pilgrimage festival of the Hindus.

[49] According to Karel Werner – an Indologist known for his studies on religion particularly Buddhism, the Irwin papers "showed conclusively that the pillar did not originate at Kaushambi", but had been at Prayaga from pre-Buddhist times.

Goyal suggests that the Allahabad Pillar Inscription strongly indicates that the early Gupta center of power was in the modern eastern Uttar Pradesh, probably around Prayaga.

[57] The Vishnu Purana provides an intriguing reference: "Anu-Ganga Prayāgam Māgadha Guptās-cha bhokshyanti," which has been translated by Majumdar as "The territory along the Ganges (up to) Prayaga will be enjoyed by the people of Magadha and the Guptas."

[62] In the same inscription, Sri Gupta and Ghatotkacha are given the title of Mahārāja while Chandragupta I and Samudragupta are referred to as Mahārājādhirāja, reflecting the increasing power and imperial glory of the dynasty.

[64] According to Ariel Glucklich – a scholar of Hinduism and Anthropology of Religion, the Xuanzang memoir mentions both the superstitious devotional suicide and narrates a story of how a Brahmin of a more ancient era tried to put an end to this practice.

He states that Akbar laid the foundation of the city at a place of the confluence of Ganges and Jumna which was a very sacred site of Hindus, then gives 1574 and 1584 as the year of its founding, and that it was named "Ilahabas".

[79] During the Mughal war of succession, the commandant of the fort who had joined Shah Shuja made an agreement with Aurangzeb's officers and surrendered it to Khan Dauran on 12 January 1659.

[83] In August and September 1773, Warren Hastings met Shuja and concluded a treaty, under which Kora and Allahabad were ceded to the Nawab for a payment of 50 lakh rupees.

[101] During the years before independence, Allahabad was home to thousands of satyagrahis led by Purushottam Das Tandon, Bishambhar Nath Pande, Narayan Dutt Tiwari and others.

[104] In the north of the Railway Station, the new city consists of neighbourhoods like Lukergunj, Civil Lines, Georgetown, Tagoretown, Allahpur, Ashok Nagar, Mumfordgunj, Bharadwaj Puram and others which are relatively new and were built during the British rule.

[105] Civil Lines is the central business district of the city and is famous for its urban setting, gridiron plan roads[106] and high rise buildings.

[121] Pratapgarh is north of the city, Bhadohi is east, Rewa is south, Chitrakoot (earlier Banda) is west, and Kaushambi, which was until recently a part of Allahabad (Prayagraj), is North-West.

[123][127] Rain from the Bay of Bengal or the Arabian Sea branches of the southwest monsoon[128] falls on Allahabad from June to September, supplying the city with most of its annual rainfall of 1,027 mm (40 in).

The most common birds found in the city are doves, peacocks, junglefowl, black partridge, house sparrows, songbirds, blue jays, parakeets, quails, bulbuls, and comb ducks.

Among 35 major Indian cities, Prayagraj reported the highest rate of violations of special and local laws to the National Crime Records Bureau.

It consists of Prayagraj Municipal Corporation, three census towns (the cantonment, Arail Uparhar, and Chak Babura Alimabad), and 17 Outer Growth (OG) areas listed in the table below.

[184] Bharat Petroleum Corporation Limited, India's largest oil company (which is state-owned), is constructing a seven-million-tonnes-per-annum (MTPA) capacity refinery in Lohgara with an investment estimated at ₹62 billion.

Major companies in the city are Reliance Industries, ITI Limited, BPCL, Dey's Medical, Food Corporation of India, Raymond Synthetics, Triveni Sheet Glass, Triveni Electroplast, EMC Power Ltd, Steel Authority of India, HCL Technologies, Indian Farmers Fertiliser Cooperative (IFFCO), Vibgyor Laboratories, Geep Industries, Hindustan Cable, Indian Oil Corporation Ltd, Baidyanath Ayurved, Hindustan Laboratories.

[189][190] In the case of agriculture crops, paddy has the largest share followed by bajra, arhar, urd and moong, in declining order during the Kharif season.

[194] The world's first airmail flight took place from Allahabad (Prayagraj) to Naini in February 1911, when 6,000 cards and letters where flown by French pilot Henri Pequet.

Chandra Mohan Garg, CEO of Prayagraj Smart City, said: "we are undertaking the restoration of the building, for which we have engaged conservation architects; and preservation of manuscripts dating back over 400 years, and digitisation of all library services".

[244][245] Allahabad has been called the "literary capital of Uttar Pradesh",[246] attracting visitors from East Asia;[247] the Chinese travellers Faxian and Xuanzang found a flourishing city in the fifth and seventh centuries, respectively.

[270] Cricket and field hockey are the most popular sports in Prayagraj,[271] with kabaddi, kho-kho, gilli danda and pehlwani mostly being played in rural areas near the city.