Allahabad, also known as Prayag, is a city in the north Indian state of Uttar Pradesh is the second-oldest city in India. The city's original name—Prayaga, or "place of offerings", comes from its position at the sacred union of the rivers Ganges, Yamuna and Saraswati. Allahabad is the seventh most populous city in Uttar Pradesh. It is ranked 130th on the list of fastest growing cities of the world. Allahabad is the largest commercial center in the state and also has the second-highest per capita income and the third greatest GDP in the state. Allahabad is also known as the "city of prime ministers" because post independence seven out of 13 prime minister of India belonged to Allahabad (Jawaharlal Nehru, Lal Bahadur Shastri, Indira Gandhi, Rajiv Gandhi, Gulzarilal Nanda, Vishwanath Pratap Singh and Chandra Shekhar).
As a large and growing city, Allahabad is home to colleges and research institutions. Government offices of both central and state government lie within the city. Allahabad has hosted cultural and sporting events, including Kumbh Mela and Indira Marathon. Although Allahabad's economy was built on tourism, its main revenue now comes from real estate and financial services.
Allahabad's literacy rate of 74.41% is close to the all-India average of 74%. This rate is the highest in the region. There are several sports complexes that can be used by both amateurs and professionals. These include the Madan Mohan Malviya Cricket stadium, Amitabh Bachchan Sports Complex and the Boys' High School & College Gymnasium. There is an International level swimming complex at Georgetown. National Sports Academy in Jhalwa which produces world class gymnasts, the academy had been chosen as the flagbearer of Indian Gymnastic in Commonwealth games.
Allahabad is served by Allahabad Airport which is 12 km from the city centre. Allahabad Junction is one of the main railway junctions of northern India. It is the headquarters of the North Central Railway Zone. It is connected to most cities in Uttar Pradesh as well as all major cities of India such as Kolkata, New Delhi, Mumbai, Chennai, Hyderabad, Indore, Bhopal, Lucknow and Jaipur. Buses operated by Uttar Pradesh State Road Transport Corporation (UPSRTC) are an important means of public transport available in the city.
The main industries of Allahabad are tourism, fishing and agriculture.Allahabad is the largest commercial center in the state; it also has the second-highest per capita income and the third greatest GDP in the state . It is a prominent industrial town, with 58 large industrial units, and more than 3,000 small scale industries. Allahabad has some glass- and wire-based industries. Bharat Petroleum Corporation Limited, India's largest oil company, is setting up a seven million tonnes per annum (MTPA)—capacity refinery at Lohgara, headquartered in the city. Allahabad is a hub for India's agricultural industry. Some industries of Allahabad are Triveni Sheet Glass Ltd Naini, Indian Telephone Industries (ITI) Naini, BPCL, Triveni Structurals Ltd, Triveni Engineering Works, SAIL, Vibgyor Laboratories, Raymond Synthetics Karchana, Hindustan Cable Ltd Naini, IFFCO Phulpur, and GEEP Industries. Institutions like Harish Chandra Mehta Atomic Research Center and Civil Aviation Training Center are established in the city.