Bhutan is located on the southern slopes of the eastern Himalayas, landlocked between the Tibet Autonomous Region to the north and the Indian states of Sikkim, West Bengal, Assam and Arunachal Pradesh to the west and south. It lies between latitudes 26° and 29°N, and longitudes 88° and 93°E. The land consists mostly of steep and high mountains crisscrossed by a network of swift rivers, which form deep valleys before draining into the Indian plains. Elevation rises from 200 m (660 ft) in the southern foothills to more than 7,000 m (23,000 ft). This great geographical diversity combined with equally diverse climate conditions contributes to Bhutan's outstanding range of biodiversity and ecosystems.
The northern region of the country consists of an arc of Eastern Himalayan alpine shrub and meadows reaching up to glaciated mountain peaks with an extremely cold climate at the highest elevations. Most peaks in the north are over 7,000 m (23,000 ft) above sea level; the highest point in Bhutan is Gangkhar Puensum at 7,570 metres (24,840 ft), which has the distinction of being the highest unclimbed mountain in the world. The lowest point, at 98 m (322 ft), is in the valley of Drangme Chhu, where the river crosses the border with India. Watered by snow-fed rivers, alpine valleys in this region provide pasture for livestock, tended by a sparse population of migratory shepherds.
Bhutan, officially the Kingdom of Bhutan, is a landlocked country in South Asia located at the eastern end of the Himalayas. It is bordered to the north by China and to the south, east and west by India. Further west, it is separated from Nepal by the Indian state of Sikkim, while further south it is separated from Bangladesh by the Indian states of Assam and West Bengal. Bhutan's capital and largest city is Thimphu. Bhutan existed as a patchwork of minor warring fiefdoms until the early 17th century, when the lama and military leader Shabdrung Ngawang Namgyal, fleeing religious persecution in Tibet, unified the area and cultivated a distinct Bhutanese identity. Later, in the early 20th century, Bhutan came into contact with the British Empire and retained strong bilateral relations with India upon its independence. In 2006, based on a global survey, Business Week rated Bhutan the happiest country in Asia and the eighth-happiest in the world.
Bhutan's landscape ranges from subtropical plains in the south to the sub-alpine Himalayan heights in the north, where some peaks exceed 7,000 metres (23,000 ft). Its total area was reported as approximately 46,500 km2 (18,000 sq mi) in 1997 and 38,394 square kilometres (14,824 sq mi) in 2002. Bhutan's state religion is Vajrayana Buddhism and the population, now (as of 2012/2013) estimated to be nearly three-quarters of a million, is predominantly Buddhist. Hinduism is the second-largest religion. In 2008, Bhutan made the transition from absolute monarchy to constitutional monarchy and held its first general election. As well as being a member of the United Nations, Bhutan is a member of the South Asian Association for Regional Cooperation (SAARC) and hosted SAARC's sixteenth summit in April 2010.