Gangtok is the capital and the most populous city of the Indian state of Sikkim. The seat of eponymous district, Gangtok is in the eastern Himalayan range, at an elevation of 1,650 m. The city's population of 100,000 consists of the three Sikkimese ethnicities: the Bhutias, Lepchas, Nepalis as well as plainsmen from other states of India. Within the higher peaks of the Himalayas and with a year-round mild temperate climate, Gangtok is at the centre of Sikkim's tourism industry.