Thimphu being capital town of Bhutan is most popularly visited place in Bhutan

Thimphu, Bhutan’s capital, occupies a valley in the country’s western interior. In addition to being the government seat, the city is known for its Buddhist sites. The massive Tashichho Dzong is a fortified monastery and government palace with gold-leaf roofs.

Punakha is a town in the Himalayas of Bhutan. It's known for the Punakha Dzong, a 17th-century fortress at the juncture of the Pho and Mo Chhu rivers.

The fortress hosts the Punakha Tshechu, a religious festival featuring masked dances and music. In the surrounding Punakha Valley, temples include the fertility-focused Chimi Lhakhang and the hilltop Khamsum Yulley Namgyal Chorten, which has river and mountain views.

Paro is a valley town in Bhutan, west of the capital, Thimphu. It is the site of the country’s only international airport and is also known for the many sacred sites in the area.

North of town, the Taktsang Palphug (Tiger’s Nest) monastery clings to cliffs above the forested Paro Valley. Northwest of here are the remains of a defensive fortress, Drukgyel Dzong, dating from the 17th century.

Gasa District or Gasa Dzongkhag is one of the 20 dzongkhags comprising Bhutan.

The northern part of Gasa District is a disputed zone under the control of the People`s Republic of China. The capital of Gasa District is Gasa Dzong near Gasa.