Darjeeling is a popular tourist destination which is located in the Mahabharat Range or Lesser Himalaya at an average elevation of 6,710 ft (2,045.2 m). It is noted for its tea industry and the Darjeeling Himalayan Railway, a UNESCO World Heritage Site. Darjeeling is the headquarters of Darjeeling district which has a partially autonomous status within the state of West Bengal. Darjeeling grew in prominence during the mid 19th century when, because of its climate, the British first established a hill station there after leasing it from the Chogyal of Sikkim and later discovered that the area was particularly well suited for tea plantations. In 1849, the British annexed the area and Darjeeling became a part of British India. The Darjeeling Himalayan Railway was opened in 1881 (it is now a UNESCO World Heritage Site) and the town became the de-facto summer capital of India during the days when the Raj was governed from Calcutta.