Trongsa, previously Tongsa (ཀྲོང་གསར་, Wylie: krong gsar), is a town and capital of Trongsa District in central Bhutan. The name means "new village" in Dzongkha. The first temple was built in 1543 by the Drukpa Kagyu lama, Ngagi Wangchuk, who was the great-grandfather of Shabdrung Ngawang Namgyel, the person who unified Bhutan.
Chökhor Raptentse Dzong at Trongsa which was built in 1644, used to be the seat of power of the Wangchuck dynasty before it became rulers of Bhutan in 1907. Traditionally the King of Bhutan first becomes the Trongsa Penlop (governor) before being named Crown Prince and eventually King. Built on a mountain spur high above the gorges of the Mangde Chhu, the dzong controlled east-west trade for centuries. The only road connecting eastern and western Bhutan (the precursor to the modern Lateral Road), passed through the courtyard of the dzong. At the command of the penlop the massive doors could be shut, dividing the country in two.
Higher yet on the mountainside is a watchtower, called "Ta Dzong", to guard the dzong from enemies.
Bhutan (Dzongkha: འབྲུག་ཡུལ་; Wylie transliteration: ʼbrug-yul "Druk Yul"), officially the Kingdom of Bhutan, is a landlocked state 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 the Republic of 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.