Lucknow(/ˈlʌknaʊ/ Lakhna'ū) is the capital city of the state of Uttar Pradesh, India A major metropolitan city of India, Lucknow is the administrative headquarters of the eponymous District and Division. It is the second largest city in north, east and central India after Delhi. Lucknow has always been known as a multicultural city that flourished as a North Indian cultural and artistic hub and seat of Nawab power in the 18th and 19th centuries. It continues to be an important centre of government, education, commerce, aerospace, finance, pharmaceuticals, technology, design, culture, tourism, music and poetry.The city stands at an elevation of approximately 123 metres (404 ft) above sea level and covers an area of 2,528 square kilometres (976 sq mi). Bounded on the east by the Barabanki District, on the west by Unnao District, on the south by Raebareli and in the north by Sitapur and Hardoi, Lucknow sits on the northwestern shore of the Gomti River. Hindi is the main language of the city and Urdu is also widely spoken. Lucknow is the centre of Shia Islam in India with highest Shia Muslims population in India. It is accessible from every part of India by air, rail and road.Historically the capital of Awadh was controlled by the Delhi Sultanate under Mughal rule, it was later transferred to the Nawabs of Awadh. In 1856 British East India company abolished local rule and took complete control of the city and the Awadh and later transferred to the British Raj in 1857. Along with the rest of India, Lucknow became independent from Britain on 15 August 1947. It is the world's 74th fastest growing city.Lucknow, along with Agra and Varanasi, is one of the 3 cities in the Uttar Pradesh Heritage Arc which is a chain of survey triangulations created by the Government Of Uttar Pradesh to boost tourism in the state.