Tashichhoedzong བཀྲ་ཤིས་ཆོས་རྫོང is a Buddhist monastery and fortress on the northern edge of the city of Thimpu in Bhutan, on the western bank of the Wang Chu. It has traditionally been the seat of the Druk Desi (or "Dharma Raja"), the head of Bhutan's civil government, an office which has been combined with the kingship since the creation of the monarchy in 1907, and summer capital of the country.
The main structure of the whitewashed building is two-storied with three-storied towers at each of the four corners topped by triple-tiered golden roofs. There is also a large central tower or utse. The original Thimphu dzong (the Dho-Ngyen Dzong, or Blue Stone Dzong) was built in 1216 by Lama Gyalwa Lhanangpa where Dechen Phodrang now stands above Thimphu. Soon after, Lama Phajo Drukgom Shigpo, who first brought the Drukpa Kagyu lineage to Bhutan, took it over.
In 1641 Shabdrung Ngawang Namgyal acquired it from Lama Phajo's descendants, but soon finding it too small, he built another one, known as the lower Dzong for the administration, keeping the older one for the monks. The original dzong was destroyed by fire in 1771 and everything was moved to the lower one which was expanded then, and again by the 13th Druk Desi (1744-1763), and also in 1866. It was damaged during an earthquake in 1897 and rebuilt in 1902. King Jigme Dorji Wangchuck had it completely renovated and enlarged over five years after he moved the capital to Thimpu in 1952 in traditional style using neither nails nor written plans.
It has been the seat of Bhutan's government since 1952 and presently houses the throne room and offices of the king, the secretariat and the ministries of home affairs and finance. Other government departments are housed in buildings nearby. West of the dzong is a small tower of Ney Khang Lhakhang which houses a statue of Shakyamuni Buddha and protective deities. In 1953 the royal family took up residence in the newly built Dechencholing Palace.