Agra a.k.a. Akbarabad is a city on the banks of the river Yamuna in the northern state of Uttar Pradesh, India, 363 kilometres (226 mi) west of state capital, Lucknow and 200 kilometres (124 mi) south from national capital New Delhi. With a population of 1,686,976 (2010 est.), it is one of the most populous cities in Uttar Pradesh and the 19th most populous in India. Because 80 percent of the city's sewage flows into Yamuna River, it is 20th most polluted city in India. Agra can also refer to the administrative district that has its headquarters in Agra city.
The city finds mention in the epic Mahabharata where it was called Agreva?a, or 'the border of the forest'. Legend ascribes the founding of the city to Raja Badal Singh, a Sikarwar Rajput king (circa 1475), whose fort, Badalgarh, stood on or near the site of the present Fort. However, the 11th century Persian poet Mas'ud Sa'd Salman writes of a desperate assault on the fortress of Agra, then held by the Shahi King Jayapala, by Sultan Mahmud of Ghazni. Sultan Sikandar Lodi was the first to move his capital from Delhi to Agra in the year 1506; he died in 1517 and his son Ibrahim Lodi remained in power there for nine more years, finally being defeated at the Battle of Panipat in 1526.