Agra is a city on the banks of the river Yamuna in the northern state of Uttar Pradesh, India. It is 378km west of the state capital, Lucknow, 206km south of the national capital New Delhi and 125km north of Gwalior. Agra is one of the most populous cities in Uttar Pradesh, and the 24th most populous in India.Agra is a major tourist destination because of its many Mughal-era buildings, most notably the Tāj Mahal, Agra Fort and Fatehpūr Sikrī, all three of which are UNESCO World Heritage Sites. Agra is included on the Golden Triangle tourist circuit, along with Delhi and Jaipur; and the Uttar Pradesh Heritage Arc, tourist circuit of UP state, along Lucknow the capital of the state and Varanasi. Agra falls within the Braj cultural region.The city was first mentioned in the epic Mahābhārata, where it was called Agrevaṇa (derived from Sanskrit (अग्रेवण) meaning "the border of the forest"). Legend ascribes the founding of the city to Agre Jat clan, Agra is named after Agre or Agr Jat.